help.java~12~

java课的一个功课

package Statistics;

import javax.swing.*;
import java.awt.*;
import java.util.*;
import java.awt.event.*;
import javax.swing.event.*;

public class Help extends JFrame {
  Vector v1;
  JLabel jLabel1 = new JLabel();
  JTextArea jTextArea1 = new JTextArea();
  JComboBox jComboBox1 = new JComboBox();

  public Help() {
    try {
      jbInit();
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
  }

  void jbInit() throws Exception {
    jTextArea1.setBounds(new Rectangle(215, 68, 338, 281));
    jLabel1.setText("Topics");
    jLabel1.setBounds(new Rectangle(34, 46, 68, 19));
    this.getContentPane().setLayout(null);
    jComboBox1.setBounds(new Rectangle(31, 72, 166, 25));
    jComboBox1.addItem("Connect to Log File");
    jComboBox1.addItem("Open Report File");
    jComboBox1.addItem("Save as Report File");
    jComboBox1.addItem("Close");
    jComboBox1.addItem("Exit");
    jComboBox1.addItem("Daily Transmission Statistics");
    jComboBox1.addItem("Hourly Transmission Statistics");
    jComboBox1.addItem("Total Transfer by Client Domain");
    jComboBox1.addItem("Total Transfers by Reserved Subdomain");
    jComboBox1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jComboBox1_actionPerformed(e);
      }
    });

    this.getContentPane().add(jLabel1, null);
    this.getContentPane().add(jComboBox1, null);
    this.getContentPane().add(jTextArea1, null);

    this.setBounds(0, 0, 600, 600);
    this.setVisible(true);
    this.setDefaultCloseOperation(EXIT_ON_CLOSE);
  }

  public static void main(String[] args) {
    Help help = new Help();
  }

  void jComboBox1_actionPerformed(ActionEvent e) {
      if(jComboBox1.getSelectedIndex()==0)
        jTextArea1.append("Connect to Log File. You can type the name and Path of the log file");
      else if(jComboBox1.getSelectedIndex()==1)
        jTextArea1.append("Display a saved report file in a Frame");
      else if(jComboBox1.getSelectedIndex()==2)
        jTextArea1.append("Save displayed text in a file");
      else if(jComboBox1.getSelectedIndex()==3)
        jTextArea1.append("Close the current Frame");
      else if(jComboBox1.getSelectedIndex()==4)
        jTextArea1.append("Exit the entire system and close all frames");
      else if(jComboBox1.getSelectedIndex()==5)
        jTextArea1.append("aaaaa");
      else if(jComboBox1.getSelectedIndex()==6)
        jTextArea1.append("aaaaa");
      else if(jComboBox1.getSelectedIndex()==7)
        jTextArea1.append("aaaaa");
      else if(jComboBox1.getSelectedIndex()==8)
        jTextArea1.append("aaaaa");
  }
}