I would like to kill a process in Java for an application in Java 1.4. ; I don't want to (can't) add some custom libraries so I will use 'Runtime' class to execute a DOS command:
tasklist: allow me to recover all processes running.
taskkill: allow me to destroy a process by its ID.
This is a Java class which will use these both commands to do the job:
KillProcess.java
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
public class KillProcess {
public static final int FIRST_COLUMN_LENGTH = 26;
/**
* pass all statements which must be found in the process description
* process definition columns are:
* - Image Name
* - PID
* - Session Name
* - Session#
* - Mem Usage
* - Status
* - User Name
* - CPU Time
* - Window Title
* @param args {String[]}: statements which must be found in the process description
* @throws IOException
*/
public static void kill(String[] args) throws IOException{
int processId = 0;
// recover a file output from the DOS command 'tasklist'
// which list all running processes
Process process = Runtime.getRuntime().exec("tasklist /v");
InputStream inputstream = process.getInputStream();
InputStreamReader inputstreamreader = new InputStreamReader(inputstream);
BufferedReader bufferedreader = new BufferedReader(inputstreamreader);
String line;
while ((line = bufferedreader.readLine()) != null) {
boolean blnFound = true;
// loop on all statements to verify if the line contains it
for (int i=0;i
if (line.indexOf(args[i])<0){
blnFound = false;
}
}
if (blnFound){
line = line.substring(FIRST_COLUMN_LENGTH);
while(line.charAt(0)==' '){
line=line.substring(1);
}
String strProcessId = line.substring(0, line.indexOf(' '));
processId = Integer.parseInt(strProcessId);
}
}
// verify the process has been found
if (processId!=0){
// kill the process via 'taskkill'
Runtime.getRuntime().exec("taskkill /pid " + processId + " /f");
System.out.println("The process "+processId+" has been killed!");
} else{
System.out.println("Process not found!");
}
}
public static void main(String[] args) throws IOException{
kill(args);
}
}
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This is an example of class use which will kill my IrfanView process ...
java KillProcess i_view32.exe IrfanView
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