该程序的作用是，点击按钮,把 textfield 里的内容的英文部分添加到choice的项目，如果选择下拉菜单中的英文单词,把对应的中文在标签上 (lab2) 显示出来. 在textfield中输入的英文和中文,之间用#间隔!!
望指教!!!!!!!!!!!!!


12,13行有错误，我个人认为是创建字符串对象数组的时候,出错，可是就找不出来，望指教!!!!!!!!!!!!!


import java.awt.*;
import java.awt.event.*;
public class dictionary extends Frame implements ActionListener,ItemListener,TextListener
{
static dictionary frm=new dictionary();
static Label lab1=new Label("中文释义为：");
static Label lab2=new Label();
static TextField tex=new TextField();
static Button btn=new Button("添加");
static Choice cho=new Choice();
String Eng[];String Chi[];
Eng=new String[15];
Chi=new String[15];

public static void main(String args[])
{
frm.setLayout(null);
frm.setTitle("应用与维护");
frm.setBounds(100,100,700,700);
lab1.setBounds(100,100,300,100);
lab2.setBounds(100,250,400,100);
tex.setBounds(100,400,600,100);
btn.setBounds(100,550,100,100);
cho.setBounds(250,550,350,100);
cho.add("英文单词");
tex.addTextListener(frm);
btn.addActionListener(frm);
cho.addItemListener(frm);
frm.add(lab1);
frm.add(lab2);
frm.add(tex);
frm.add(btn);
frm.add(cho);
frm.setViseble(true);
}
public void textValueChanged(TextEvent e)
{
for(int a=1;a<=15;a++)
System.out.println(a+"次处理");
}
public void actionPerformed(ActionEvent e)
{
String str;
str=tex.getText();
inti=1;
char c=str.charAt(i);
while(c!='#')
{
i++;
c=str.charAt(i);
}
int j=0;
while(j<15)
{
Eng[j]=new String();
Chi[j]=new String();
Eng[j]=str.substring(0,i);
CHi[j]=set.substring(i);
if(cho.getItemCount()<=15)
cho.add(Eng[j]);
j++;
}
tex.setText(" ");
}
public void itemStateChanged(ItemEvent e)
{
int dex;
dex=cho.getSelectedIndex();
if(dex>=1)
lab2.setText(Chi[dex-1]);
}
}

如果只是要改为无错的话，可以这样写

public class dictionary extends Frame implements ActionListener,ItemListener,TextListener
{
static dictionary frm=new dictionary();
static Label lab1=new Label("中文释义为：");
static Label lab2=new Label();
static TextField tex=new TextField();
static Button btn=new Button("添加");
static Choice cho=new Choice();
String Eng[]=new String[15];String Chi[]=new String[15];

public static void main(String args[])
{
frm.setLayout(null);
frm.setTitle("应用与维护");
frm.setBounds(100,100,700,700);
lab1.setBounds(100,100,300,100);
lab2.setBounds(100,250,400,100);
tex.setBounds(100,400,600,100);
btn.setBounds(100,550,100,100);
cho.setBounds(250,550,350,100);
cho.add("英文单词");
tex.addTextListener(frm);
btn.addActionListener(frm);
cho.addItemListener(frm);
frm.add(lab1);
frm.add(lab2);
frm.add(tex);
frm.add(btn);
frm.add(cho);
frm.setVisible(true);
}
public void textValueChanged(TextEvent e)
{
for(int a=1;a<=15;a++)
System.out.println(a+"次处理");
}
public void actionPerformed(ActionEvent e)
{
String str;
str=tex.getText();
int i=1;
char c=str.charAt(i);
while(c!='#')
{
i++;
c=str.charAt(i);
}
int j=0;
while(j<15)
{
Eng[j]=new String();
Chi[j]=new String();
Eng[j]=str.substring(0,i);
Chi[j]=str.substring(i);
if(cho.getItemCount()<=15)
cho.add(Eng[j]);
j++;
}
tex.setText(" ");
}
public void itemStateChanged(ItemEvent e)
{
int dex;
dex=cho.getSelectedIndex();
if(dex>=1)
lab2.setText(Chi[dex-1]);
}
}

请注意缩进和格式。还有你的程序里面最多的错误居然是拼写错误，
inti = 1;空格不见了。
set.substring str变成了set
CHi[j]=set.substring(i); CHi有这个变量吗？

你的程序虽然可以运行了，但仍然在运行时有很多错误，请继续努力吧！

那样修改过以后好像也不对.错误也很多

我写了一个这样的程序……不知道你们能不能运行，我的jdk是1.5的

程序代码：

import java.awt.event.*;
import java.util.Vector;

import javax.swing.*;
public class DisplayDemo extends JFrame implements ActionListener, ItemListener
{
        private JButton btn;
        private JTextField t;
        private JLabel lbltext, lbldisplay;
        private JComboBox combox;
        private Vector vect;
        private JPanel p;
        private String str, strEn = \"\", strCn = \"\", s;
        public DisplayDemo(String title)
        {
                super(title);
                s = \"Please Choise an English\";
                
                vect = new Vector();
                vect.addElement(s);
                p = new JPanel();
                t = new JTextField(20);
                lbltext = new JLabel(\"中文释义为:  \");
                lbldisplay = new JLabel();
                btn = new JButton(\"添加\");
                btn.addActionListener(this);
                
                combox = new JComboBox();
                combox.addItem(s);
                combox.addItemListener(this);
                p.add(lbltext);
                p.add(lbldisplay);
                p.add(t);
                p.add(btn);
                p.add(combox);
                getContentPane().add(p);
                getRootPane().setDefaultButton(btn);
        }
        public static void main(String[] args)
        {
                DisplayDemo f = new DisplayDemo(\"Test\");
                f.setSize(500, 300);
                f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                f.setVisible(true);
        }
        public void actionPerformed(ActionEvent e)
        {
                str = t.getText();
                int i = 0;
                char ch;
                strEn = \"\";
                strCn = \"\";
                if (str.equals(\"\"))
                {
                        JOptionPane.showMessageDialog(this, \"你什么都没填!\", \"填写错误\",
                                        JOptionPane.ERROR_MESSAGE);
                        return;
                }
                else
                {
                        ch = str.charAt(i);
                        try
                        {
                                while (ch != '#')
                                {
                                        strEn = strEn + String.valueOf(ch);
                                        i++;
                                        ch = str.charAt(i);
                                }
                        }
                        catch (StringIndexOutOfBoundsException strException)
                        {
                                JOptionPane.showMessageDialog(this,
                                                \"必须包含英文和中文并且使用#隔开!\", \"填写错误\",
                                                JOptionPane.ERROR_MESSAGE);
                                return;
                        }
                }
                if (i == 0)
                {
                        JOptionPane.showMessageDialog(this, \"英文不能为空!\", \"填写错误\",
                                        JOptionPane.ERROR_MESSAGE);
                        return;
                }
                strCn = str.substring(strEn.length() + 1, str.length());
                if (strCn.equals(\"\"))
                {
                        JOptionPane.showMessageDialog(this, \"中文解释不能为空!\",
                                        \"填写错误\", JOptionPane.ERROR_MESSAGE);
                        return;
                }
                combox.addItem(strEn);
                vect.addElement(strCn);
                
                t.setText(\"\");
        }
        public void itemStateChanged(ItemEvent e)
        {
                int i;
                i = combox.getSelectedIndex();
                if(i != 0)
                        lbldisplay.setText(vect.elementAt(i).toString());
        }
}