스레드 정보 출력 / 타이머 스레드 강제 종료 / flag를 이용한 스레드 종료

main 스레드 정보 출력 code

 

public class ThreadMainEx {
	public static void main(String[] args) {
		long id = Thread.currentThread().getId();
		String name = Thread.currentThread().getName();
		int priority = Thread.currentThread().getPriority();
		
		Thread.State s = Thread.currentThread().getState();
		
		System.out.println("현재 스레드 이름 = "+name);
		System.out.println("현재 스레드 ID = "+id);
		System.out.println("현재 스레드 우선순위 값 = "+priority);
		System.out.println("현재 스레드 상태 = "+s);
	}
}

 

 

타이머 스레드 강제 종료 code

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import java.awt.*;

public class ThreadInterruptEx extends JFrame{
	private Thread th;
	
	class TimerRunnable implements Runnable{
		private JLabel timerLabel;
		TimerRunnable(JLabel timerLabel){
			this.timerLabel=timerLabel;
		}
		
		public void run() {
			int n=0;
			while(true) {
				timerLabel.setText(Integer.toString(n));
				n++;
				try {
					Thread.sleep(1000);
				}
				catch(InterruptedException e) {
					return;
				}
			}
		}
	}
	
	ThreadInterruptEx(){
		setTitle("13장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container c = getContentPane();
		c.setLayout(new FlowLayout());
		
		JLabel timerLabel = new JLabel();
		timerLabel.setFont(new Font("Gothic", Font.ITALIC, 80));
		
		TimerRunnable runnable = new TimerRunnable(timerLabel);
		th = new Thread(runnable);
		c.add(timerLabel);
		
		JButton btn = new JButton("kill Timer");
		btn.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				th.interrupt();
				JButton btn = (JButton)e.getSource();
				btn.setEnabled(false);
			}
		});
		c.add(btn);
		
		setSize(300, 200); 
		setVisible(true); 
		
		th.start();
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new ThreadInterruptEx();
	}

}

 

 

flag를 이용하여 스레드를 강제 종료하는 code

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import java.awt.*;

public class ThreadFinishFlagEx extends JFrame{
	private RandomThread th;
	
	class RandomThread extends Thread{
		private Container contentPane;
		private boolean flag = false;
		
		public RandomThread(Container contentPane) {
			this.contentPane = contentPane;
		}
		
		public void finish() {
			flag = true;
		}
		
		public void run() {
			while(true) {
				int x = ((int)(Math.random()*contentPane.getWidth()));
				int y = ((int)(Math.random()*contentPane.getHeight()));
				JLabel label = new JLabel("Java");
				label.setSize(80,30);
				label.setLocation(x, y);
				contentPane.add(label);
				contentPane.repaint();
				try {
					Thread.sleep(300);
					if(flag==true) {
						contentPane.removeAll();
						label = new JLabel("finish");
						label.setSize(80,30);
						label.setLocation(100,100);
						
						label.setForeground(Color.RED);
						contentPane.add(label);
						contentPane.repaint();
						return;
					}
				}
				catch(InterruptedException e) {
					return;
				}
			}
		}
	}
	
	ThreadFinishFlagEx(){
		setTitle("13장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container c = getContentPane();
		c.setLayout(null);
		
		c.addMouseListener(new MouseAdapter() {
			public void mousePressed(MouseEvent e) {
				th.finish();
			}
		});
		
		setSize(300, 200); 
		setVisible(true); 
		
		th = new RandomThread(c);
		th.start();
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new ThreadFinishFlagEx();
	}

}