Find the Pid of a Java Process Under Linux

How to find the process id of a running Java process on Windows? And how to kill the process alone?

You can use the jps utility that is included in the JDK to find the process id of a Java process. The output will show you the name of the executable JAR file or the name of the main class.

Then use the Windows task manager to terminate the process. If you want to do it on the command line, use

TASKKILL /PID %PID%

How to find the process id that is running my Java Application

You could use jps to view current Java processes, then pass the output to taskkill. Call this script with the full package.Classname of the process to kill:

rem Run as killpid.cmd package.Classname 
@echo off
jps -l |findstr %1 > %TEMP%\pid.txt

echo FOUND:
type %TEMP%\pid.txt

for /f %%i in (%TEMP%\pid.txt) do taskkill /pid %%i

How to check is a certain process is running - java on linux

A possible solution might be explorer the proc entries. Indeed, this is how top and others gain access to the list of running process.

I'm not completely sure if this is what your looking for, but it can give you some clue:

    import java.awt.Desktop;
    import java.io.BufferedReader;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.IOException;
    import java.io.InputStreamReader;

    public class OpenFolder {
        public static void main(String[] args) throws IOException {
            System.out.println(findProcess("process_name_here"));
        }

        public static boolean findProcess(String processName) throws IOException {
            String filePath = new String("");
            File directory = new File("/proc");
            File[] contents = directory.listFiles();
            boolean found = false;
            for (File f : contents) {
                if (f.getAbsolutePath().matches("\\/proc\\/\\d+")) {
                    filePath = f.getAbsolutePath().concat("/status");
                    if (readFile(filePath, processName))
                        found = true;
                }
            }
            return found;
        }

        public static boolean readFile(String filename, String processName)
        throws IOException {
            FileInputStream fstream = new FileInputStream(filename);
            BufferedReader br = new BufferedReader(new InputStreamReader(fstream));
            String strLine;
            strLine = br.readLine().split(":")[1].trim();
            br.close();
            if (strLine.equals(processName))
                return true;
            else
                return false;
        }
    }

LInux java class from process id pid

ps aux | grep java

try this command and you can list of java process.
[or]

JPS will be helpful

JPS,JSTAT,JMAP,JSTACK,JHAT

you can run jps command it will show the pid value and based on these pid value others command will be executed.

How can a Java program get its own process ID?

There exists no platform-independent way that can be guaranteed to work in all jvm implementations.
ManagementFactory.getRuntimeMXBean().getName() looks like the best (closest) solution, and typically includes the PID. It's short, and probably works in every implementation in wide use.

On linux+windows it returns a value like "12345@hostname" (12345 being the process id). Beware though that according to the docs, there are no guarantees about this value:

Returns the name representing the running Java virtual machine. The
returned name string can be any arbitrary string and a Java virtual
machine implementation can choose to embed platform-specific useful
information in the returned name string. Each running virtual machine
could have a different name.

In Java 9 the new process API can be used:

long pid = ProcessHandle.current().pid();

Get the PID for a process started by Eclipse

if you have java/bin in your path then you can use java ps tool:
jps -l

Output:
17623 com.intellij.idea.Main
29003 sun.tools.jps.Jps

The first column is process id.

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