用java的GUI编写计算器.doc

package gui;import java.awt.BorderLayout;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JTextField;public class NewTestFrame extends FatherFrameprivate String s=;private String s1 = new String2;private int a = new int2;/*组件方法定义*/JFrame jf = new JFrame(我的窗体);/创建窗体JPanel jp = new JPanel();/创建容器JPanel jp1 = new JPanel();JButton jb = new JButton(0);/创建按钮JButton jb1 = new JButton(1);JButton jb2 = new JButton(2);JButton jb3 = new JButton(3);JButton jb4 = new JButton(4);JButton jb5 = new JButton(5);JButton jb6 = new JButton(6);JButton jb7 = new JButton(7);JButton jb8 = new JButton(8);JButton jb9 = new JButton(9);JButton jb10 = new JButton(+);JButton jb11 = new JButton(-);JButton jb12 = new JButton(*);JButton jb13 = new JButton(/);JButton jb14 = new JButton(=);JButton jb15 = new JButton(CE);JTextField jtf = new JTextField(20);/创建文本final JLabel label = new JLabel(=);/内部匿名类只能使用外部类的常量属性/* * param args */public void jiSuanQi()/*运算方法*/public int jiaFa(int a,int b)/加法return a+b;public int jianFa(int a,int b)/减法return a-b;public int chengFa(int a,int b)/乘法return a*b;public int chuFa(int a,int b)/除法return a/b;Overridepublic void initButton() /添加按钮/ TODO Auto-generated method stub/*按钮添加*/jp.add(jtf);/向容器中添加文本框jtf.setBounds(40, 20,400, 20);jp.add(label);label.setBounds(80, 20, 200, 20);jp1.setLayout(new GridLayout(4,4,5,5);/网格布局4*4，间距5*5jp1.add(jb);/向容器中添加按钮jp1.add(jb1);jp1.add(jb2);jp1.add(jb3);jp1.add(jb4);jp1.add(jb5);jp1.add(jb6);jp1.add(jb7);jp1.add(jb8);jp1.add(jb9);jp1.add(jb10);jp1.add(jb11);jp1.add(jb12);jp1.add(jb13);jp1.add(jb14);jp1.add(jb15);jf.add(jp,BorderLayout.NORTH);/向窗口中添加文本框，并将文本框放在北面jf.add(jp1);/Overridepublic void initFrame() /加载窗体/ TODO Auto-generated method stubjf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);/设置点击窗体关闭按钮时的效果jf.setBounds(100, 100, 350, 350);/设置窗体的大小jf.setResizable(false);/设置窗体是否可以拖拽jf.setVisible(true);/设置窗体可以显示Overridepublic void initLayout() /设置自定义布局/ TODO Auto-generated method stubOverridepublic void initListener() / TODO Auto-generated method stub/*处理事件*/ActionListener listener = new ActionListener()public void actionPerformed(ActionEvent e) /e.getActionCommand()/随着按钮点击的不同获取不同按钮上的文字if(!e.getActionCommand().equals(+)&!e.getActionCommand().equals(-)&!e.getActionCommand().equals(/)&!e.getActionCommand().equals(*)&!e.getActionCommand().equals(CE)&!e.getActionCommand().equals(=)System.out.print(e.getActionCommand();/输出选择值s += e.getActionCommand();/如果e.getActionCommand()不为=-*/+ce，则为0-9的数字，if(e.getActionCommand().equals(+)|e.getActionCommand().equals(-)|e.getActionCommand().equals(/)|e.getActionCommand().equals(*)if(a0 = 0)/如果是第一次计算，或清空后的重新计算，执行a0 = Integer.parseInt(s);s = ;s10 = e.getActionCommand();System.out.print(e.getActionCommand();/输出选择值else/累加计算执行a1 = Integer.parseInt(s);if(s10.equals(+)a0 = NewTestFrame.this.jiaFa(a0, a1);else if(s10.equals(-)a0 = NewTestFrame.this.jianFa(a0, a1);else if(s10.equals(*)a0 = NewTestFrame.this.chengFa(a0, a1);else if(s10.equals(/)a0 = NewTestFrame.this.chuFa(a0, a1);System.out.println();System.out.print(a0);System.out.print(e.getActionCommand();/输出选择值s11 = =+a0;label.setText(s11);s10 = e.getActionCommand();a1 = 0;s=;if(e.getActionCommand().equals(=)/如果是等号执行if(a0 = 0)/a0 = Integer.parseInt(s);s = ;System.out.println();System.out.println(结果为：+a0);s11 = =+a0;label.setText(s11);elsea1 = Integer.parseInt(s);if(s10.equals(+)a0 = NewTestFrame.this.jiaFa(a0, a1);else if(s10.equals(-)a0 = NewTestFrame.this.jianFa(a0, a1);else if(s10.equals(*)a0 = NewTestFrame.this.chengFa(a0, a1);else if(s10.equals(/)a0 = NewTestFrame.this.chuFa(a0, a1);System.out.println();System.out.print(e.getActionCommand();/输出选择值System.out.print(a0);s11 = =+a0;label.setText(s11);s10 = e.getActionCommand();a1 = 0;s=;if(e.getActionCommand().equals(CE)/如果是CE，清空a0 = 0;a1 = 0;s = ;s10 = ;s11 = =;label.setText(s11);/*加载事件*/jb.addActionListener(listener);/加载事件jb1.addActionListener(listener);jb2.addActionListener(listener);jb3.addActionListener(listener);jb4.addActionListener(listener);jb5.addActionListener(listener);jb6.addActionListener(listener);jb7.addActionListener(listener);jb8.addActionListener(listener);jb9.addActionListener(listener);jb10.addActionListener(listener);jb11.addActionListener(listener);jb12.addActionListener(listener);jb13.addActionListener(l