java编写的简单数字计算器

package accurate; import java.awt.*; import java.awt.event.*; import javax.swing.*; import com.borland.jbcl.layout.*; import javax.swing.BorderFactory; import java.awt.Color; import javax.swing.border.TitledBorder; import java.awt.Rectangle; /** * <p>Title: </p> * <p>Description: </p> * <p>Copyright: Copyright (c) 2006</p> * <p>Company: </p> * @author not attributable * @version 1.0 */ public class Frame1 extends JFrame { JPanel contentPane; int flag=0; JTextField t1 = new JTextField(); XYLayout xYLayout1 = new XYLayout(); JTextField t2 = new JTextField(); JTextField r = new JTextField(); JLabel l1 = new JLabel(); JLabel jLabel1 = new JLabel(); JPanel jPanel1 = new JPanel(); JPanel jPanel2 = new JPanel(); JButton jButton1 = new JButton(); JButton jButton2 = new JButton(); JButton jButton3 = new JButton(); JButton jButton4 = new JButton(); JButton jButton5 = new JButton(); JButton jButton6 = new JButton(); FlowLayout flowLayout1 = new FlowLayout(); JButton jButton7 = new JButton(); JButton jButton8 = new JButton(); JButton jButton9 = new JButton(); JButton jButton10 = new JButton(); JButton jButton11 = new JButton(); JButton jButton12 = new JButton(); JButton jButton13 = new JButton(); JButton jButton14 = new JButton(); JButton jButton15 = new JButton(); JButton jButton16 = new JButton(); JPanel jPanel3 = new JPanel(); JButton jButton17 = new JButton(); JPanel jPanel4 = new JPanel(); TitledBorder titledBorder1 = new TitledBorder(""); JPanel jPanel5 = new JPanel(); TitledBorder titledBorder2 = new TitledBorder(""); JButton jButton18 = new JButton(); void change_num(String number){ if(flag%2==0)t1.setText(t1.getText()+number); else t2.setText(t2.getText()+number); } //Construct the frame public Frame1() { enableEvents(AWTEvent.WINDOW_EVENT_MASK); try { jbInit(); } catch(Exception e) { e.printStackTrace(); } } //Component initialization private void jbInit() throws Exception { contentPane = (JPanel) this.getContentPane(); contentPane.setLayout(xYLayout1); this.setSize(new Dimension(460, 260)); this.setTitle("Calculator"); t2.setVerifyInputWhenFocusTarget(true); t2.setText(""); l1.setFont(new java.awt.Font("Dialog", 0, 15)); l1.setText("+"); jLabel1.setFont(new java.awt.Font("Dialog", 0, 15)); jLabel1.setRequestFocusEnabled(true); jLabel1.setText(" ="); jPanel1.setBorder(BorderFactory.createEtchedBorder()); jPanel1.setMaximumSize(new Dimension(32767, 32767)); jPanel1.setLayout(flowLayout1); jButton1.setText("3"); jButton1.setVerticalAlignment(SwingConstants.CENTER); jButton1.addActionListener(new Frame1_jButton1_actionAdapter(this)); jButton2.setSelected(false); jButton2.setText("1"); jButton2.addActionListener(new Frame1_jButton2_actionAdapter(this)); jButton3.setToolTipText(""); jButton3.setText("2"); jButton3.addActionListener(new Frame1_jButton3_actionAdapter(this)); jButton4.setText("4"); jButton4.addActionListener(new Frame1_jButton4_actionAdapter(this)); jButton5.setText("5"); jButton5.addActionListener(new Frame1_jButton5_actionAdapter(this)); jButton6.setText("6"); jButton6.addActionListener(new Frame1_jButton6_actionAdapter(this)); jButton7.setText("7"); jButton7.addActionListener(new Frame1_jButton7_actionAdapter(this)); jButton8.setText("8"); jButton8.addActionListener(new Frame1_jButton8_actionAdapter(this)); jButton9.setOpaque(true); jButton9.setText("9"); jButton9.addActionListener(new Frame1_jButton9_actionAdapter(this)); jButton10.setText("0"); jButton10.addActionListener(new Frame1_jButton10_actionAdapter(this)); jButton11.setText("R"); jButton11.addActionListener(new Frame1_jButton11_actionAdapter(this)); jButton12.setText("C"); jButton12.addActionListener(new Frame1_jButton12_actionAdapter(this)); jButton13.setFont(new java.awt.Font("Dialog", 1, 12)); jButton13.setText("+"); jButton13.addActionListener(new Frame1_jButton13_actionAdapter(this)); jButton14.setFont(new java.awt.Font("Dialog", 1, 12)); jButton14.setText("-"); jButton14.addActionListener(new Frame1_jButton14_actionAdapter(this)); jButton15.setFont(new java.awt.Font("Dialog", 1, 12)); jButton15.setVerifyInputWhenFocusTarget(true); jButton15.setText("*"); jButton15.addActionListener(new Frame1_jButton15_actionAdapter(this)); jButton16.setFont(new java.awt.Font("Dialog", 1, 12)); jButton16.setVerifyInputWhenFocusTarget(true); jButton16.setText("/"); jButton16.addActionListener(new Frame1_jButton16_actionAdapter(this)); jPanel2.setBorder(BorderFactory.createEtchedBorder()); jButton17.setFont(new java.awt.Font("Dialog", 0, 12)); jButton17.setText("计算"); jButton17.addActionListener(new Frame1_jButton17_actionAdapter(this)); t1.setText(""); jPanel4.setBorder(titledBorder1); jPanel5.setBorder(titledBorder2); jPanel5.setLayout(null); jButton18.setBounds(new Rectangle(25, 39, 73, 27)); jButton18.setText("清空"); jButton18.addActionListener(new Frame1_jButton18_actionAdapter(this)); contentPane.add(t1, new XYConstraints(52, 22, 71, -1)); contentPane.add(t2, new XYConstraints(177, 21, 67, -1)); contentPane.add(jLabel1, new XYConstraints(262, 27, 32, 13)); jPanel1.add(jButton2, null); jPanel1.add(jButton3, null); jPanel1.add(jButton1, null); jPanel1.add(jButton4, null); jPanel1.add(jButton5, null); jPanel1.add(jButton6, null); jPanel1.add(jButton7, null); jPanel1.add(jButton8, null); jPanel1.add(jButton9, null); jPanel1.add(jButton10, null); jPanel1.add(jButton11, null); jPanel1.add(jButton12, null); contentPane.add(l1, new XYConstraints(143, 23, 23, 20)); contentPane.add(jPanel2, new XYConstraints(217, 72, 215, 46)); jPanel2.add(jPanel3, null); jPanel2.add(jButton13, null); jPanel2.add(jButton14, null); jPanel2.add(jButton15, null); jPanel2.add(jButton16, null); contentPane.add(jPanel1, new XYConstraints(40, 70, 151, 136)); contentPane.add(r, new XYConstraints(308, 22, 101, 21)); contentPane.add(jButton17, new XYConstraints(344, 163, 70, 29)); contentPane.add(jPanel5, new XYConstraints(217, 125, 215, 81)); jPanel5.add(jButton18); contentPane.add(jPanel4, new XYConstraints(39, 8, 391, 50)); } //Overridden so we can exit when window is closed protected void processWindowEvent(WindowEvent e) { super.processWindowEvent(e); if (e.getID() == WindowEvent.WINDOW_CLOSING) { System.exit(0); } } int jButton17_actionPerformed(ActionEvent e) { if(t1.getText()==null||t2.getText()==null)return 0; if(l1.getText()=="+") { r.setText(""+(Integer.parseInt(t1.getText())+Integer.parseInt(t2.getText())));} else if(l1.getText()=="-") r.setText(""+(Integer.parseInt(t1.getText())-Integer.parseInt(t2.getText()))); else if(l1.getText()=="*") r.setText(""+(Double.parseDouble(t1.getText())*Double.parseDouble(t2.getText()))); else if(l1.getText()=="/") r.setText(""+(Double.parseDouble(t1.getText())/(Integer.parseInt(t2.getText())))); //r.setText(""+(Double.parseDouble(t1.getText())/(Integer.parseInt(t2.getText())))); return 1; } void jButton13_actionPerformed(ActionEvent e) { l1.setText("+"); flag++; } void jButton14_actionPerformed(ActionEvent e) { l1.setText("-"); flag++; } void jButton15_actionPerformed(ActionEvent e) { l1.setText("*"); flag++; } void jButton16_actionPerformed(ActionEvent e) { l1.setText("/"); flag++; } void jButton2_acti