Send parameters to java class from servlet
1
I have a Jsp page and servlet which basically accepts the value for number of cities and next for matrix. My servlet takes the input value as string convert it into integer and store it in a two dimensional array
Index.jsp
<body>
<form action="sample" method="post">
<h1>Travelling Salesman Problem</h1>
<input placeholder="Number of Cities" type="text" name="cities" required="">
<input placeholder="Matrix" type="text" name="matrix" required="">
<button>Submit</button>
</form>
</body>
Servlet
public class sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
int city = Integer.parseInt(request.getParameter("cities"));
String numbers = request.getParameter("matrix");
String splitText = numbers.split(" ");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
int array2d = new int[city][city];
int count = 0;
for (int i = 0; i < city; i++) {
for (int j = 0; j < city; j++) {
if (count == mat.length)
break;
array2d[i][j] = mat[i * city + j];
count++;
}
}
}
}
Now i want to pass these parameters city and array2d to the following java class
public class TSPNearestNeighbour
{
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour()
{
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix)
{
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new
int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty())
{
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes)
{
if
(adjacencyMatrix[element][i] > 1 && visited[i] == 0)
{
if (min > adjacencyMatrix[element][i])
{
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag)
{
visited[dst] = 1;
stack.push(dst);
System.out.print(dst +"t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main (String... arg)
{
int number_of_nodes;
Scanner scanner = null;
try
{
number_of_nodes = city //here i want to pass the city parameter
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes +1];
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
adjacency_matrix[i][j]= array2d[i][j] // and here the array 2d parameter
}
}
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
if
(adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0)
{
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch)
{
System.out.println("Wrong Input format");
}
scanner.close();
}
}
So how can we pass on these parameters from a servlet?
And where to include this class? In the servlet itself or create a separate class, as I'm using intellij. So please guide me through this.
java jsp web servlets java-ee
asked Nov 21 '18 at 15:26
AbhishekAbhishek
199
add a comment |
1
I have a Jsp page and servlet which basically accepts the value for number of cities and next for matrix. My servlet takes the input value as string convert it into integer and store it in a two dimensional array
Index.jsp
<body>
<form action="sample" method="post">
<h1>Travelling Salesman Problem</h1>
<input placeholder="Number of Cities" type="text" name="cities" required="">
<input placeholder="Matrix" type="text" name="matrix" required="">
<button>Submit</button>
</form>
</body>
Servlet
public class sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
int city = Integer.parseInt(request.getParameter("cities"));
String numbers = request.getParameter("matrix");
String splitText = numbers.split(" ");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
int array2d = new int[city][city];
int count = 0;
for (int i = 0; i < city; i++) {
for (int j = 0; j < city; j++) {
if (count == mat.length)
break;
array2d[i][j] = mat[i * city + j];
count++;
}
}
}
}
Now i want to pass these parameters city and array2d to the following java class
public class TSPNearestNeighbour
{
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour()
{
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix)
{
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new
int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty())
{
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes)
{
if
(adjacencyMatrix[element][i] > 1 && visited[i] == 0)
{
if (min > adjacencyMatrix[element][i])
{
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag)
{
visited[dst] = 1;
stack.push(dst);
System.out.print(dst +"t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main (String... arg)
{
int number_of_nodes;
Scanner scanner = null;
try
{
number_of_nodes = city //here i want to pass the city parameter
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes +1];
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
adjacency_matrix[i][j]= array2d[i][j] // and here the array 2d parameter
}
}
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
if
(adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0)
{
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch)
{
System.out.println("Wrong Input format");
}
scanner.close();
}
}
So how can we pass on these parameters from a servlet?
And where to include this class? In the servlet itself or create a separate class, as I'm using intellij. So please guide me through this.
java jsp web servlets java-ee
asked Nov 21 '18 at 15:26
AbhishekAbhishek
199
Where is that "program" running?
– JGlass
Nov 21 '18 at 15:47
Where do you want to pass them?
– Jonathan Laliberte
Nov 21 '18 at 15:52
Actually this is where even I'm confused.. If I separately run the program by creating separate .java file in intellij and run. It's working fine by accepting command line inputs. So I wanted a web interface for that and my progress is this. So how to pass these inputted parameters exactly to program? So, please guide me on this.
– Abhishek
Nov 21 '18 at 16:04
@Jonathan I have highlighted the place where I want to pass the argument,please check
– Abhishek
Nov 21 '18 at 16:06
add a comment |
1
1
1
I have a Jsp page and servlet which basically accepts the value for number of cities and next for matrix. My servlet takes the input value as string convert it into integer and store it in a two dimensional array
Index.jsp
<body>
<form action="sample" method="post">
<h1>Travelling Salesman Problem</h1>
<input placeholder="Number of Cities" type="text" name="cities" required="">
<input placeholder="Matrix" type="text" name="matrix" required="">
<button>Submit</button>
</form>
</body>
Servlet
public class sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
int city = Integer.parseInt(request.getParameter("cities"));
String numbers = request.getParameter("matrix");
String splitText = numbers.split(" ");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
int array2d = new int[city][city];
int count = 0;
for (int i = 0; i < city; i++) {
for (int j = 0; j < city; j++) {
if (count == mat.length)
break;
array2d[i][j] = mat[i * city + j];
count++;
}
}
}
}
Now i want to pass these parameters city and array2d to the following java class
public class TSPNearestNeighbour
{
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour()
{
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix)
{
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new
int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty())
{
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes)
{
if
(adjacencyMatrix[element][i] > 1 && visited[i] == 0)
{
if (min > adjacencyMatrix[element][i])
{
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag)
{
visited[dst] = 1;
stack.push(dst);
System.out.print(dst +"t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main (String... arg)
{
int number_of_nodes;
Scanner scanner = null;
try
{
number_of_nodes = city //here i want to pass the city parameter
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes +1];
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
adjacency_matrix[i][j]= array2d[i][j] // and here the array 2d parameter
}
}
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
if
(adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0)
{
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch)
{
System.out.println("Wrong Input format");
}
scanner.close();
}
}
So how can we pass on these parameters from a servlet?
And where to include this class? In the servlet itself or create a separate class, as I'm using intellij. So please guide me through this.
java jsp web servlets java-ee
asked Nov 21 '18 at 15:26
AbhishekAbhishek
199
I have a Jsp page and servlet which basically accepts the value for number of cities and next for matrix. My servlet takes the input value as string convert it into integer and store it in a two dimensional array
Index.jsp
<body>
<form action="sample" method="post">
<h1>Travelling Salesman Problem</h1>
<input placeholder="Number of Cities" type="text" name="cities" required="">
<input placeholder="Matrix" type="text" name="matrix" required="">
<button>Submit</button>
</form>
</body>
Servlet
public class sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
int city = Integer.parseInt(request.getParameter("cities"));
String numbers = request.getParameter("matrix");
String splitText = numbers.split(" ");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
int array2d = new int[city][city];
int count = 0;
for (int i = 0; i < city; i++) {
for (int j = 0; j < city; j++) {
if (count == mat.length)
break;
array2d[i][j] = mat[i * city + j];
count++;
}
}
}
}
Now i want to pass these parameters city and array2d to the following java class
public class TSPNearestNeighbour
{
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour()
{
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix)
{
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new
int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty())
{
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes)
{
if
(adjacencyMatrix[element][i] > 1 && visited[i] == 0)
{
if (min > adjacencyMatrix[element][i])
{
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag)
{
visited[dst] = 1;
stack.push(dst);
System.out.print(dst +"t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main (String... arg)
{
int number_of_nodes;
Scanner scanner = null;
try
{
number_of_nodes = city //here i want to pass the city parameter
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes +1];
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
adjacency_matrix[i][j]= array2d[i][j] // and here the array 2d parameter
}
}
for (int i = 1; i <=number_of_nodes; i++)
{
for (int j = 1; j <=number_of_nodes; j++)
{
if
(adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0)
{
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch)
{
System.out.println("Wrong Input format");
}
scanner.close();
}
}
So how can we pass on these parameters from a servlet?
And where to include this class? In the servlet itself or create a separate class, as I'm using intellij. So please guide me through this.
java jsp web servlets java-ee
java jsp web servlets java-ee
asked Nov 21 '18 at 15:26
AbhishekAbhishek
199
asked Nov 21 '18 at 15:26
AbhishekAbhishek
199
edited Nov 21 '18 at 16:47
Abhishek
asked Nov 21 '18 at 15:26
AbhishekAbhishek
199
asked Nov 21 '18 at 15:26
AbhishekAbhishek
199
asked Nov 21 '18 at 15:26
AbhishekAbhishek
199
199
Where is that "program" running?
– JGlass
Nov 21 '18 at 15:47
Where do you want to pass them?
– Jonathan Laliberte
Nov 21 '18 at 15:52
Actually this is where even I'm confused.. If I separately run the program by creating separate .java file in intellij and run. It's working fine by accepting command line inputs. So I wanted a web interface for that and my progress is this. So how to pass these inputted parameters exactly to program? So, please guide me on this.
– Abhishek
Nov 21 '18 at 16:04
@Jonathan I have highlighted the place where I want to pass the argument,please check
– Abhishek
Nov 21 '18 at 16:06
add a comment |
Where is that "program" running?
– JGlass
Nov 21 '18 at 15:47
Where do you want to pass them?
– Jonathan Laliberte
Nov 21 '18 at 15:52
Actually this is where even I'm confused.. If I separately run the program by creating separate .java file in intellij and run. It's working fine by accepting command line inputs. So I wanted a web interface for that and my progress is this. So how to pass these inputted parameters exactly to program? So, please guide me on this.
– Abhishek
Nov 21 '18 at 16:04
@Jonathan I have highlighted the place where I want to pass the argument,please check
– Abhishek
Nov 21 '18 at 16:06
Where is that "program" running?
– JGlass
Nov 21 '18 at 15:47
Where is that "program" running?
– JGlass
Nov 21 '18 at 15:47
Where do you want to pass them?
– Jonathan Laliberte
Nov 21 '18 at 15:52
Where do you want to pass them?
– Jonathan Laliberte
Nov 21 '18 at 15:52
Actually this is where even I'm confused.. If I separately run the program by creating separate .java file in intellij and run. It's working fine by accepting command line inputs. So I wanted a web interface for that and my progress is this. So how to pass these inputted parameters exactly to program? So, please guide me on this.
– Abhishek
Nov 21 '18 at 16:04
Actually this is where even I'm confused.. If I separately run the program by creating separate .java file in intellij and run. It's working fine by accepting command line inputs. So I wanted a web interface for that and my progress is this. So how to pass these inputted parameters exactly to program? So, please guide me on this.
– Abhishek
Nov 21 '18 at 16:04
@Jonathan I have highlighted the place where I want to pass the argument,please check
– Abhishek
Nov 21 '18 at 16:06
@Jonathan I have highlighted the place where I want to pass the argument,please check
– Abhishek
Nov 21 '18 at 16:06
add a comment |
1 Answer
1
active
oldest
votes
1
I'm seeing some logical errors in your code, but I'm not going into that context and I don't know what you are trying to do(On the processing side). But I'll try to cover the actual question you are asking, like "how to pass the jsp parameters to your another class".
So you can directly pass the strings as an argument to the another class like I've shown in the below code. I think I don't need to explain further you can see the code you will get it.
First your Servlet code: Sample.java
package com.server.testing;
import java.io.IOException;
public class Sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String city = request.getParameter("cities");
String numbers = request.getParameter("matrix");
String args = new String[2];
args[0] = city;
args[1] = numbers;
TSPNearestNeighbour.main(args);
}
}
Now your another java class: TSPNearestNeighbour.java
package com.server.testing;
import java.util.InputMismatchException;
import java.util.Stack;
public class TSPNearestNeighbour {
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour() {
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix) {
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty()) {
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes) {
if (adjacencyMatrix[element][i] > 1 && visited[i] == 0) {
if (min > adjacencyMatrix[element][i]) {
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag) {
visited[dst] = 1;
stack.push(dst);
System.out.print(dst + "t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main(String args) {
if(args.length<2) {
System.out.println("Two arguments required <city> <numbers>");
System.exit(-1);
}
int number_of_nodes=Integer.parseInt(args[0]);
String splitText = args[1].split(" +");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
try {
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes + 1];
int count = 0;
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (count == mat.length)
break;
adjacency_matrix[i][j]= mat[(i-1) * number_of_nodes + (j-1)];
count++;
}
}
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0) {
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch) {
System.out.println("Wrong Input format");
}
}
}
answered Nov 21 '18 at 18:23
abhishek chaurasiyaabhishek chaurasiya
1225
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 '18 at 16:02
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 '18 at 5:07
I used your concept and it's working.
– Abhishek
Nov 26 '18 at 6:20
add a comment |
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1 Answer
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votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
I'm seeing some logical errors in your code, but I'm not going into that context and I don't know what you are trying to do(On the processing side). But I'll try to cover the actual question you are asking, like "how to pass the jsp parameters to your another class".
So you can directly pass the strings as an argument to the another class like I've shown in the below code. I think I don't need to explain further you can see the code you will get it.
First your Servlet code: Sample.java
package com.server.testing;
import java.io.IOException;
public class Sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String city = request.getParameter("cities");
String numbers = request.getParameter("matrix");
String args = new String[2];
args[0] = city;
args[1] = numbers;
TSPNearestNeighbour.main(args);
}
}
Now your another java class: TSPNearestNeighbour.java
package com.server.testing;
import java.util.InputMismatchException;
import java.util.Stack;
public class TSPNearestNeighbour {
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour() {
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix) {
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty()) {
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes) {
if (adjacencyMatrix[element][i] > 1 && visited[i] == 0) {
if (min > adjacencyMatrix[element][i]) {
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag) {
visited[dst] = 1;
stack.push(dst);
System.out.print(dst + "t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main(String args) {
if(args.length<2) {
System.out.println("Two arguments required <city> <numbers>");
System.exit(-1);
}
int number_of_nodes=Integer.parseInt(args[0]);
String splitText = args[1].split(" +");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
try {
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes + 1];
int count = 0;
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (count == mat.length)
break;
adjacency_matrix[i][j]= mat[(i-1) * number_of_nodes + (j-1)];
count++;
}
}
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0) {
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch) {
System.out.println("Wrong Input format");
}
}
}
answered Nov 21 '18 at 18:23
abhishek chaurasiyaabhishek chaurasiya
1225
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 '18 at 16:02
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 '18 at 5:07
I used your concept and it's working.
– Abhishek
Nov 26 '18 at 6:20
add a comment |
1
I'm seeing some logical errors in your code, but I'm not going into that context and I don't know what you are trying to do(On the processing side). But I'll try to cover the actual question you are asking, like "how to pass the jsp parameters to your another class".
So you can directly pass the strings as an argument to the another class like I've shown in the below code. I think I don't need to explain further you can see the code you will get it.
First your Servlet code: Sample.java
package com.server.testing;
import java.io.IOException;
public class Sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String city = request.getParameter("cities");
String numbers = request.getParameter("matrix");
String args = new String[2];
args[0] = city;
args[1] = numbers;
TSPNearestNeighbour.main(args);
}
}
Now your another java class: TSPNearestNeighbour.java
package com.server.testing;
import java.util.InputMismatchException;
import java.util.Stack;
public class TSPNearestNeighbour {
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour() {
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix) {
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty()) {
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes) {
if (adjacencyMatrix[element][i] > 1 && visited[i] == 0) {
if (min > adjacencyMatrix[element][i]) {
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag) {
visited[dst] = 1;
stack.push(dst);
System.out.print(dst + "t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main(String args) {
if(args.length<2) {
System.out.println("Two arguments required <city> <numbers>");
System.exit(-1);
}
int number_of_nodes=Integer.parseInt(args[0]);
String splitText = args[1].split(" +");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
try {
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes + 1];
int count = 0;
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (count == mat.length)
break;
adjacency_matrix[i][j]= mat[(i-1) * number_of_nodes + (j-1)];
count++;
}
}
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0) {
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch) {
System.out.println("Wrong Input format");
}
}
}
answered Nov 21 '18 at 18:23
abhishek chaurasiyaabhishek chaurasiya
1225
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 '18 at 16:02
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 '18 at 5:07
I used your concept and it's working.
– Abhishek
Nov 26 '18 at 6:20
add a comment |
1
1
1
I'm seeing some logical errors in your code, but I'm not going into that context and I don't know what you are trying to do(On the processing side). But I'll try to cover the actual question you are asking, like "how to pass the jsp parameters to your another class".
So you can directly pass the strings as an argument to the another class like I've shown in the below code. I think I don't need to explain further you can see the code you will get it.
First your Servlet code: Sample.java
package com.server.testing;
import java.io.IOException;
public class Sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String city = request.getParameter("cities");
String numbers = request.getParameter("matrix");
String args = new String[2];
args[0] = city;
args[1] = numbers;
TSPNearestNeighbour.main(args);
}
}
Now your another java class: TSPNearestNeighbour.java
package com.server.testing;
import java.util.InputMismatchException;
import java.util.Stack;
public class TSPNearestNeighbour {
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour() {
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix) {
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty()) {
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes) {
if (adjacencyMatrix[element][i] > 1 && visited[i] == 0) {
if (min > adjacencyMatrix[element][i]) {
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag) {
visited[dst] = 1;
stack.push(dst);
System.out.print(dst + "t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main(String args) {
if(args.length<2) {
System.out.println("Two arguments required <city> <numbers>");
System.exit(-1);
}
int number_of_nodes=Integer.parseInt(args[0]);
String splitText = args[1].split(" +");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
try {
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes + 1];
int count = 0;
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (count == mat.length)
break;
adjacency_matrix[i][j]= mat[(i-1) * number_of_nodes + (j-1)];
count++;
}
}
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0) {
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch) {
System.out.println("Wrong Input format");
}
}
}
answered Nov 21 '18 at 18:23
abhishek chaurasiyaabhishek chaurasiya
1225
I'm seeing some logical errors in your code, but I'm not going into that context and I don't know what you are trying to do(On the processing side). But I'll try to cover the actual question you are asking, like "how to pass the jsp parameters to your another class".
So you can directly pass the strings as an argument to the another class like I've shown in the below code. I think I don't need to explain further you can see the code you will get it.
First your Servlet code: Sample.java
package com.server.testing;
import java.io.IOException;
public class Sample extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String city = request.getParameter("cities");
String numbers = request.getParameter("matrix");
String args = new String[2];
args[0] = city;
args[1] = numbers;
TSPNearestNeighbour.main(args);
}
}
Now your another java class: TSPNearestNeighbour.java
package com.server.testing;
import java.util.InputMismatchException;
import java.util.Stack;
public class TSPNearestNeighbour {
private int numberOfNodes;
private Stack<Integer> stack;
public TSPNearestNeighbour() {
stack = new Stack<Integer>();
}
public void tsp(int adjacencyMatrix) {
numberOfNodes = adjacencyMatrix[1].length - 1;
int visited = new int[numberOfNodes + 1];
visited[1] = 1;
stack.push(1);
int element, dst = 0, i;
int min = Integer.MAX_VALUE;
boolean minFlag = false;
System.out.print(1 + "t");
while (!stack.isEmpty()) {
element = stack.peek();
i = 1;
min = Integer.MAX_VALUE;
while (i <= numberOfNodes) {
if (adjacencyMatrix[element][i] > 1 && visited[i] == 0) {
if (min > adjacencyMatrix[element][i]) {
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag) {
visited[dst] = 1;
stack.push(dst);
System.out.print(dst + "t");
minFlag = false;
continue;
}
stack.pop();
}
}
public static void main(String args) {
if(args.length<2) {
System.out.println("Two arguments required <city> <numbers>");
System.exit(-1);
}
int number_of_nodes=Integer.parseInt(args[0]);
String splitText = args[1].split(" +");
int mat = new int[splitText.length];
for (int i = 0; i < splitText.length; i++) {
mat[i] = Integer.parseInt(splitText[i]);
}
try {
int adjacency_matrix = new int[number_of_nodes + 1][number_of_nodes + 1];
int count = 0;
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (count == mat.length)
break;
adjacency_matrix[i][j]= mat[(i-1) * number_of_nodes + (j-1)];
count++;
}
}
for (int i = 1; i <= number_of_nodes; i++) {
for (int j = 1; j <= number_of_nodes; j++) {
if (adjacency_matrix[i][j] == 1 && adjacency_matrix[j][i] == 0) {
adjacency_matrix[j][i] = 1;
}
}
}
System.out.println("the citys are visited as follows");
TSPNearestNeighbour tspNearestNeighbour = new TSPNearestNeighbour();
tspNearestNeighbour.tsp(adjacency_matrix);
} catch (InputMismatchException inputMismatch) {
System.out.println("Wrong Input format");
}
}
}
answered Nov 21 '18 at 18:23
abhishek chaurasiyaabhishek chaurasiya
1225
answered Nov 21 '18 at 18:23
abhishek chaurasiyaabhishek chaurasiya
1225
answered Nov 21 '18 at 18:23
abhishek chaurasiyaabhishek chaurasiya
1225
answered Nov 21 '18 at 18:23
abhishek chaurasiyaabhishek chaurasiya
1225
1225
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 '18 at 16:02
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 '18 at 5:07
I used your concept and it's working.
– Abhishek
Nov 26 '18 at 6:20
add a comment |
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 '18 at 16:02
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 '18 at 5:07
I used your concept and it's working.
– Abhishek
Nov 26 '18 at 6:20
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 '18 at 16:02
According to my logic the java class is working fine. I just wanted to know regarding passing values. So, i will try what you have explained and let me see.
– Abhishek
Nov 22 '18 at 16:02
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 '18 at 5:07
Okay let me know if it worked (and you can accept the answer if it worked)
– abhishek chaurasiya
Nov 23 '18 at 5:07
I used your concept and it's working.
– Abhishek
Nov 26 '18 at 6:20
I used your concept and it's working.
– Abhishek
Nov 26 '18 at 6:20
add a comment |
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Where is that "program" running?
– JGlass
Nov 21 '18 at 15:47
Where do you want to pass them?
– Jonathan Laliberte
Nov 21 '18 at 15:52
Actually this is where even I'm confused.. If I separately run the program by creating separate .java file in intellij and run. It's working fine by accepting command line inputs. So I wanted a web interface for that and my progress is this. So how to pass these inputted parameters exactly to program? So, please guide me on this.
– Abhishek
Nov 21 '18 at 16:04
@Jonathan I have highlighted the place where I want to pass the argument,please check
– Abhishek
Nov 21 '18 at 16:06