[Mi:eclipse/workspace/rep#6] j03040% java List Ond.java
File name:Ond.java
 1:/*
 2: * day: 2004/01/04
 3: * @author j03040
 4: * @ST-ID  035740F
 5: */
 6:import java.awt.*;
 7:import java.awt.event.*;
 8:public class Ond extends Frame{
 9:     Label x0=new Label("Input Number");
 10:    Label x1=new Label("Result");
 11:    TextField t0=new TextField();
 12:    TextField t1=new TextField();
 13:    Button[] b0=new Button[] {new Button("C"),
 14:                            new Button("F")};
 15:    public Ond(){
 16:            setLayout(null);
 17:            add(x0);x0.setBounds(80,40,100,30);
 18:            add(t0);t0.setBounds(80,60,100,20);
 19:            for(int i=0;i<b0.length;i++){
 20:                    add(b0[i]);b0[i].setBounds(80,100+i*30,100,30);
 21:            }
 22:            add(x1);x1.setBounds(80,170,50,10);
 23:            add(t1);t1.setBounds(80,200,80,10);
 24:            b0[0].addActionListener(new ActionListener() {
 25:            public void actionPerformed(ActionEvent evt) {
 26:                    try {
 27:                             int a=Integer.parseInt(t0.getText());
 28:                             int aaa;
 29:                             aaa=(int)Math.rint(a * 1.8 + 32);
 30:                             t1.setText(Integer.toString(aaa)+" F");
 31:                            } catch(Exception ex) { 
 32:                            t1.setText("Error!");
 33:                    }
 34:            }
 35:            });
 36:            b0[1].addActionListener(new ActionListener() {
 37:            public void actionPerformed(ActionEvent evt) {
 38:                    try {
 39:                             int a=Integer.parseInt(t0.getText());
 40:                             int aaa;
 41:                             aaa=(int)Math.rint((a-32)/1.8); 
 42:                             t1.setText(Integer.toString(aaa)+" C");
 43:                            } catch(Exception ex) { 
 44:                            t1.setText("Error!");
 45:                             }
 46:                    }
 47:            });
 48:    }
 49:    public static void main(String[] args) {
 50:            Frame aaa=new Ond();
 51:            aaa.setSize(250,250);
 52:            aaa.setVisible(true);
 53:            aaa.setTitle("C F Ond");
 54:            aaa.addWindowListener(new WindowAdapter() {
 55:            public void windowClosing(WindowEvent evt) {
 56:                    System.exit(0);
 57:            }
 58:            }); 
 59:    }
 60:
 61:}