Java，时间测试的程序，增加一秒，增加一分钟，增加一天，有部分代码，剩余的怎么写，路过的各位大佬帮忙看看 // Lab 1: // Lab 1: TimeTest4.java// Program adds validation to Fig. 8.7 exampleimport java.awt.*;import java.awt.event.*;import javax.swing.*;public class TestTime3 extends JApplet implements ActionListener { private Time3 time; private JLabel hourLabel, minuteLabel, secondLabel; private JTextField hourField, minuteField, secondField, displayField; private JButton tickButton; // Create Time3 object and set up GUI public void init() { time = new Time3(); Container container = getContentPane(); container.setLayout( new FlowLayout() ); // set up hourLabel and hourField hourLabel = new JLabel( "Set Hour" ); hourField = new JTextField( 10 ); hourField.addActionListener( this ); container.add( hourLabel ); container.add( hourField ); // set up minuteLabel and