JAVA特殊容器JProgressBar进度条

JProgressBar jProgressBar=new JProgressBar(JProgressBar.HORIZONTAL,0,100);//设置水平进度
条，范围是0-100

jProgressBar.setIndeterminate(true/false);//设置不确定进度条

jProgressBar.setStringPainted(true/false);//设置确定进度条

jProgressBar.setBorderPainted(true/false);;//设置有无边框

import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class jprogress {
    JFrame jFrame=new JFrame();
    JProgressBar jProgressBar=new JProgressBar(JProgressBar.HORIZONTAL,0,100);
    JCheckBox j1=new JCheckBox("不确定进度条");
    JCheckBox j2=new JCheckBox("不绘制边框");

    private  class stimulate implements Runnable{
        private volatile int amount;//任务总量  volatile内存可见
        private int nowamount;//当前任务量


        public stimulate(int amount) {
            this.amount=amount;
        }

        public int getAmount() {
            return amount;
        }

        public void setAmount(int amount) {
            this.amount = amount;
        }

        public int getNowamount() {
            return nowamount;
        }


        @Override
        public void run() {
            //子线程的任务
         while (nowamount

运行截图：

进度条可以随时间的变化而变化