Java java.lang.management.ThreadInfo用法及代碼示例

// Java Program to demonstrate ThreadInfo Class
// Importing required libraries
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadInfo;
// Main class
public class GFG {
    // main driver method
    public static void main(String[] args)
    {
        // Try block to check for exceptions
        try {
            // Creating a new thread by
            // creating an object of Thread class
            Thread thread = new Thread();
            // running the thread using run() method
            thread.run();
            // Getting thread id using getId() method
            long id = thread.getId();
            // Creating a new ThreadInfo object
            // using that id
            ThreadInfo info
                = ManagementFactory.getThreadMXBean()
                      .getThreadInfo(id);
            // Print and display message on the console
            System.out.println(
                "ThreadInfo object created successfully");
        }
        // Catch block to handle the exceptions
        catch (Exception e) {
            // print the line number where exception occurs
            e.printStackTrace();
        }
    }
}

// Java Program to demonstrate ThreadInfo Class
// Importing required libraries
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadInfo;
// Main class
public class GFG {
    // Main driver method
    public static void main(String[] args)
    {
        // try block to check for exceptions
        try {
            long id = 10;
            // Creating a new ThreadInfo object
            // using this id
            ThreadInfo info
                = ManagementFactory.getThreadMXBean()
                      .getThreadInfo(id);
            // Printing information about the thread
            // 1. Printing thread id
            System.out.println("Thread ID: "
                               + info.getThreadId());
            // 2. Printing Thread Name
            System.out.println("Thread Name: "
                               + info.getThreadName());
            // 3. Printing thread State
            System.out.println("Thread State: "
                               + info.getThreadState());
            // 4. Printing thread waited count
            System.out.println("Waited count: "
                               + info.getWaitedCount());
            // 5. Printing thread waited time
            System.out.println("Waited time: "
                               + info.getWaitedTime());
            // 6. Printing how many times this thread had
            // been blocked
            System.out.println("Times blocked: "
                               + info.getBlockedCount());
            // 7. Printing Blocked duration
            System.out.println("Blocked duration: "
                               + info.getBlockedTime());
            // 8. Printing Locked Monitors
            System.out.println("Locked Monitors: "
                               + info.getLockedMonitors());
            // 9. Printing Locked Owner's ID
            System.out.println("Locked Owner's ID: "
                               + info.getLockOwnerId());
            // 10. Printing Locked Owner's Name
            System.out.println("Locked Owner's Name: "
                               + info.getLockOwnerName());
        }
        // Catch block to handle the exceptions
        catch (Exception e) {
            // Print the line number where exception occurred
            e.printStackTrace();
        }
    }
}