testawt3.java

本人大二学习汇编语言程序设计时的全部源代码

package com.jxd.f06.experiment3;

import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Checkbox;
import java.awt.Choice;
import java.awt.Frame;
import java.awt.Label;
import java.awt.Panel;
import java.awt.TextArea;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

import javax.swing.JOptionPane;

public class TestAWT3 extends Frame implements ActionListener, ItemListener {

	private TextField tf;
	private TextArea ta;
	private Choice ch;
	private Checkbox cba, cbb, cbc, cball;
	private Panel pn1, pn2;
	private Label la;
	private Button bt;

	private Set<String> set = new HashSet<String>();

	public TestAWT3() {
		init();
	}

	public static void main(String[] args) {
		new TestAWT3();
	}

	public void init() {
		tf = new TextField(15);
		ta = new TextArea();
		ch = new Choice();
		cball = new Checkbox("ALL", false);
		cba = new Checkbox("A", false);
		cbb = new Checkbox("B", false);
		cbc = new Checkbox("C", false);
		pn1 = new Panel();
		pn2 = new Panel();
		la = new Label("请输入英文单词：");
		bt = new Button("提交");

		ch.addItem("请选择单词");

		cball.addItemListener(this);
		cba.addItemListener(this);
		cbb.addItemListener(this);
		cbc.addItemListener(this);
		// ch.addItemListener(this);
		tf.addActionListener(this);

		pn1.add(la);
		pn1.add(tf);
		pn1.add(bt);

		pn2.add(cball);
		pn2.add(cba);
		pn2.add(cbb);
		pn2.add(cbc);
		pn2.add(ch);

		this.add(pn1, BorderLayout.NORTH);
		this.add(ta, BorderLayout.CENTER);
		this.add(pn2, BorderLayout.SOUTH);
		this.pack();
		this.addWindowListener(new WindowAdapter() {
			@Override
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}

		});
		this.setSize(400, 400);
		this.setLocation(400, 350);
		this.setVisible(true);

	}

	public void actionPerformed(ActionEvent e) {
		String str = tf.getText();
		if(str.matches("[a-zA-Z]*")) {
			ta.append(str + "\n");
		set.add(str);
		tf.setText("");
		} else {
			System.out.println("英文单词不能包含特殊字符！");
			JOptionPane.showMessageDialog(null, "英文单词不能包含特殊字符！");
			
		}
		
	}
	
	public void itemStateChanged(ItemEvent e) {
		Iterator<String> iter = set.iterator();
		String s = null;
		if (e.getSource() == cball) {
			if (cball.getState()) {
				while (iter.hasNext()) {
					 s = iter.next();
					ch.add(s);
				}
			} else {
				ch.removeAll();
				ch.addItem("请选择单词");
			}
		}
		if (e.getSource() == cba) {
			if (cba.getState()) {
				while (iter.hasNext()) {
					s = iter.next();
					if (s.matches("^a.*") || s.matches("^A.*")) {
						ch.add(s);
					}
				}
			} else {
				ch.removeAll();
				ch.addItem("请选择单词");
			}
		}

		if (e.getSource() == cbb) {
			if (cbb.getState()) {
				while (iter.hasNext()) {
					s = iter.next();
					if (s.matches("^b.*") || s.matches("^B.*")) {
						ch.add(s);
					}
				}
			} else {
				ch.removeAll();
				ch.addItem("请选择单词");
			}
		}

		if (e.getSource() == cbc) {
			if (cbc.getState()) {
				while (iter.hasNext()) {
					s = iter.next();
					if (s.matches("^c.*") || s.matches("^C.*")) {
						ch.add(s);
					}
				}
			} else {
				ch.removeAll();
				ch.addItem("请选择单词");
			}
		}
	}
}