java（线程）实现一个秒表功能

来源：互联网发布：知天命之年编辑：程序博客网时间：2024/05/09 00:39
import java.awt.Container;import java.awt.Font;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.text.NumberFormat;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;public class Miaobiao extends JFrame{    JButton start,pause,stop;    JLabel hour,min,sec;    Start ss;    public static void main(String[] args) {        new Miaobiao();    }    public Miaobiao(){        /**********Jframe制作一个秒表界面**********/        this.setTitle("秒表");        this.setSize(500, 300);        this.setLocationRelativeTo(null);        Container c=this.getContentPane();        c.setLayout(null);        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        /**********时钟**********/        hour=new JLabel("00");        hour.setBounds(80, 70, 80, 50);        hour.setFont(new Font("Consolas", Font.BOLD, 50));        hour.setHorizontalAlignment(JLabel.CENTER);        /**********时钟分钟件冒号**********/        JLabel m_1=new JLabel(":");        m_1.setBounds(170, 70, 30, 50);        m_1.setFont(new Font("Consolas", Font.BOLD, 50));        /**********分钟**********/        min=new JLabel("00");        min.setBounds(200, 70, 80, 50);        min.setFont(new Font("Consolas", Font.BOLD, 50));        min.setHorizontalAlignment(JLabel.CENTER);        /**********分钟和秒钟间的冒号**********/        JLabel m_2=new JLabel(":");        m_2.setBounds(290, 70, 30, 50);        m_2.setFont(new Font("Consolas", Font.BOLD, 50));        /**********秒钟**********/        sec=new JLabel("00");        sec.setBounds(320, 70, 80, 50);        sec.setFont(new Font("Consolas", Font.BOLD, 50));        sec.setHorizontalAlignment(JLabel.CENTER);        /**********开始按钮**********/        start=new JButton("开始");        start.setBounds(30, 200, 100, 30);        start.addActionListener(new ActionListener() {            @Override            public void actionPerformed(ActionEvent e) {                start.setEnabled(false);                stop.setEnabled(true);                pause.setEnabled(true);                ss=new Start(hour,min,sec);                ss.start();            }        });        /**********暂停按钮**********/        pause=new JButton("暂停");        pause.setBounds(190, 200, 100, 30);        pause.setEnabled(false);        pause.addActionListener(new ActionListener() {            @Override            public void actionPerformed(ActionEvent e) {                start.setEnabled(true);                stop.setEnabled(true);                pause.setEnabled(false);                new Pause(ss).start();            }        });        /**********结束按钮**********/        stop=new JButton("结束");        stop.setBounds(350, 200, 100, 30);        stop.setEnabled(false);        stop.addActionListener(new ActionListener() {            @Override            public void actionPerformed(ActionEvent e) {                start.setEnabled(true);                stop.setEnabled(false);                pause.setEnabled(false);                new Pause(ss).start();                sec.setText("00");                min.setText("00");                hour.setText("00");            }        });        c.add(start);        c.add(pause);        c.add(stop);        c.add(hour);        c.add(m_1);        c.add(min);        c.add(m_2);        c.add(sec);        this.setVisible(true);    }}class Start extends Thread{    JLabel s,m,h;    public Start(JLabel h,JLabel m,JLabel s){        this.h=h;        this.m=m;        this.s=s;    }    @Override    public void run() {        int time_s,time_m,time_h;        time_s=Integer.parseInt(s.getText());        time_m=Integer.parseInt(m.getText());        time_h=Integer.parseInt(h.getText());        NumberFormat nf = NumberFormat.getInstance();   //调整时间的输出格式        nf.setMinimumIntegerDigits(2) ;     //让时分秒都显示为两位数        while (true) {            try {                Thread.sleep(1000);                 } catch (InterruptedException e) {                break;  //如果中断此线程，跳出死循环从而结束线程            }            time_s++;            if (time_s>=60) {                time_m++;                time_s=0;   //秒钟等于60，分钟加1，秒钟置0                if(time_m>=60){                    time_h++;                    time_m=0;                    if(time_m>=24){                        time_h=0;                    }                }            }            s.setText(nf.format(time_s));   //  格式化输出 e.g. 0:0:1——>00:00:01            m.setText(nf.format(time_m));            h.setText(nf.format(time_h));        }    }}class Pause extends Thread{    Start ss;    public Pause(Start ss) {        this.ss=ss;    }    @Override    public void run() {        ss.interrupt();    }}
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