Java Swing-12 Swing实例10进度条

• [ 声明] 学习笔记和代码均参考自徐彤老师（ITFlight）的视频

进度条

package demo10;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JProgressBar;
import javax.swing.Timer;

/*
 * 时钟控制进度条移动
 * */

public class Demo1 extends JFrame implements ActionListener{
	
	Timer t=new Timer(100,this);
	JProgressBar pos=new JProgressBar(JProgressBar.HORIZONTAL);
	
	Demo1(){
		setSize(600,600);
		
		pos.setMinimum(0);
		pos.setMaximum(100);
		pos.setValue(10);
		pos.setStringPainted(true);
		
		add(pos,BorderLayout.NORTH);
		
		t.start();
		
		setVisible(true);
	}
	int x=10;
	public void actionPerformed(ActionEvent e) {
		x=x+10;
		pos.setValue(x);
		
	}
	public static void main(String[] args) {
		new Demo1();
	}
	
}

package demo10;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JProgressBar;

/*
 * 点击step按钮，进度条移动
 * */

public class Demo2 extends JFrame implements ActionListener{
	
	JButton button=new JButton("step");
	JProgressBar pos=new JProgressBar(JProgressBar.HORIZONTAL);
	
	Demo2(){
		setSize(600,600);
		
		pos.setMinimum(0);
		pos.setMaximum(100);
		pos.setValue(10);
		pos.setStringPainted(true);
		
		add(pos,BorderLayout.NORTH);
		add(button,BorderLayout.SOUTH);
		
		
		button.addActionListener(this);
		
		setVisible(true);
	}
	int x=10;
	public void actionPerformed(ActionEvent e) {
		x=x+10;
		pos.setValue(x);
		
	}
	public static void main(String[] args) {
		new Demo2();
	}
	
}

package demo10;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JProgressBar;
import javax.swing.Timer;

/*
 * 两个时钟分别控制水平和垂直进度条移动
 * */

public class Demo3 extends JFrame implements ActionListener{
	
	Timer t=new Timer(100,this);
	Timer t2=new Timer(100,this);
	JProgressBar pos=new JProgressBar(JProgressBar.HORIZONTAL);
	JProgressBar pos2=new JProgressBar(JProgressBar.VERTICAL);
	
	Demo3(){
		setSize(600,600);
		
		pos.setMinimum(0);
		pos.setMaximum(100);
		pos.setValue(10);
		
		pos2.setMinimum(0);
		pos2.setMaximum(100);
		pos2.setValue(10);
		
		pos.setStringPainted(true);
		pos2.setStringPainted(true);
		
		add(pos,BorderLayout.NORTH);
		add(pos2,BorderLayout.CENTER);
		
		t.start();
		t2.start();
		
		setVisible(true);
	}
	int x=10;
	int y=0;
	public void actionPerformed(ActionEvent e) {
		if(e.getSource()==t) {
			x=x+1;
			pos.setValue(x);
		}
		if(e.getSource()==t2) {
			y=y+2;
			pos2.setValue(y);
		}
		
	}
	public static void main(String[] args) {
		new Demo3();
	}
	
}

package demo10;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JProgressBar;
import javax.swing.Timer;

/*
 * 两个时钟分别控制水平和垂直进度条移动
 * */

public class Demo4 extends JFrame implements ActionListener{
	
	Timer t=new Timer(100,this);
	Timer t2=new Timer(100,this);
	JProgressBar pos=new JProgressBar(JProgressBar.HORIZONTAL); //水平进度条
	JProgressBar pos2=new JProgressBar(JProgressBar.VERTICAL);//垂直进度条
	
	Demo4(){
		setSize(600,600);
		
		pos.setMinimum(0); //最大值
		pos.setMaximum(100);//最小值
		pos.setValue(10);//当前值
		
		pos2.setMinimum(0);
		pos2.setMaximum(100);
		pos2.setValue(10);
		
		pos.setBackground(Color.red);//背景和前景色
		pos.setForeground(Color.green);
		pos2.setBackground(Color.red);
		pos2.setForeground(Color.green);
		
		
		pos.setStringPainted(true);//显示百分比
		pos2.setStringPainted(true);
		
		add(pos,BorderLayout.NORTH);
		add(pos2,BorderLayout.CENTER);
		
		t.start();
		t2.start();
		
		setVisible(true);
	}
	int x=10;
	int y=0;
	int a=1,b=1;
	public void actionPerformed(ActionEvent e) {
		if(e.getSource()==t) {
			x=x+a
			if(x>100||x<0) {
				a*=-1;
			}
			pos.setValue(x);
		}
		if(e.getSource()==t2) {
			y=y+b;
			if(y>100||y<0) {
				b*=-1;
			}
			pos2.setValue(y);
		}
		
	}
	public static void main(String[] args) {
		new Demo4();
	}
	
}