我处女作，有几个问题搞不定，大家帮忙！
学习J两个月了，想写一个通讯录的程序，但是遇到了点麻烦，请个位帮忙！
问题：
我的代码在编译的时候总是出现
unreported exception java.lang.Exception:must be caught or decleared to be thrown
如果在对应的事件函数后面加上 throws Exception 以后有会出现：
* cannot implemnt *(java.awt.event.*) （*指的是某个函数）
下面是我的源代码（未完成，有点乱），拜托大家帮帮忙！谢谢了！
顺便问一下，关于java的差错控制的机制是怎么样的？
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
public class Messagelist extends JFrame {
// 变量表预留空间//
private JMenuBar bar;
private JMenu creat,sear,dele,help;
private JMenuItem cGroup,cPerson,dGroup,dPerson,about,exit;
private JLabel name,sex,group,mNumber,pNumber,zip,addr,email,tip,qq;
private JButton updata,del,addTG;
private JComboBox sGroup;
private JList nameList;
private JPanel innerWest,panel1,panel2;
private JTextField nameField,sexField,groupField,mNumberField,pNumberField,
zipField,qqField,emailField;
private JTextArea tipArea,addrArea;
private String groupName,pName,pSex,pGroup,pmNumber,ppNumber,pZip,pAddr,pEmail,
pTip,pQQ;
private GridLayout grid;
private RandomAccessFile gInfo,pInfo;
private Pocessor pocessor=new Pocessor();
private Record records[]=new Record[50];
private String nameString[]=new String[50];
private int pastSelection=-1;
//private Icon updataI;
public Messagelist() throws Exception //建立用户界面//
{
super("通讯录 v1.0");
creat=new JMenu("新建");
creat.setMnemonic('N');
cGroup=new JMenuItem("通信组");
cGroup.setMnemonic('G');
cGroup.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent E)
{
pocessor.addGroup();
}
}
);
cPerson=new JMenuItem("联系人");
cPerson.setMnemonic('P');
cPerson.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent E)
{
pocessor.addPersonDialog();
}
}
);
exit=new JMenuItem("退出");
exit.setMnemonic('X');
exit.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent E)
{
pocessor.exit();
}
}
);
creat.add(cGroup);
creat.add(cPerson);
creat.add(exit);
sear=new JMenu("查找");
sear.setMnemonic('S');
sear.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent E)
{
//sear();
}
}
);
dele=new JMenu("删除");
dele.setMnemonic('D');
dGroup=new JMenuItem("通讯组");
dGroup.setMnemonic('R');
dGroup.addActionListener(
new ActionListener () {
public void actionPerformed(ActionEvent E)
{
//deleGroup();
}
}
);
dPerson=new JMenuItem("联系人");
dPerson.setMnemonic('E');
dPerson.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent E)
{
pocessor.delPerson();
}
}
);
dele.add(dGroup);
dele.add(dPerson);
help=new JMenu("帮助");
about=new JMenuItem("关于");
about.setMnemonic('A');
about.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent E)
{
JOptionPane.showMessageDialog(Messagelist.this,
"制作人：破茧·化蝶","关于",JOptionPane.PLAIN_MESSAGE);
}
}
);
help.add(about);
bar=new JMenuBar();
setJMenuBar(bar);
bar.add(creat);
bar.add(sear);
bar.add(dele);
bar.add(help);
//String groupName[]={"d","ddd","dddd"};
sGroup=new JComboBox();
sGroup.setBackground(Color.WHITE);
sGroup.setMaximumRowCount(4);
sGroup.addItemListener(
new ItemListener() {
public void itemStateChanged(ItemEvent I)
{
pocessor.selectedGDisplay();
}
}
);
nameList=new JList();
nameList.setFixedCellWidth(100);
nameList.setVisibleRowCount(10);
nameList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
/*nameList.addListSelectionListener(
new ListSelectionListener() {
public void valueChanged(ListSelectionEvent L)
{
pocessor.selectedPDisplay();
}
}
);*/
innerWest=new JPanel();
innerWest.setLayout(new BorderLayout());
innerWest.add(sGroup,BorderLayout.NORTH);
innerWest.add(new JScrollPane (nameList),BorderLayout.CENTER);
name=new JLabel("姓 名",JLabel.LEFT);
sex=new JLabel("性 别",JLabel.LEFT);
group=new JLabel("组",JLabel.LEFT);
mNumber=new JLabel("手 机",JLabel.LEFT);
pNumber=new JLabel("电 话",JLabel.LEFT);
email=new JLabel("Email",JLabel.LEFT);
addr=new JLabel("地 址",JLabel.LEFT);
zip=new JLabel("邮 编",JLabel.LEFT);
tip=new JLabel("备 注(不超过100字)",JLabel.LEFT);
nameField=new JTextField(6);
sexField=new JTextField(2);
groupField=new JTextField(6);
//groupField.setText("作者");
groupField.setEditable(false);
mNumberField=new JTextField(21);
pNumberField=new JTextField(21);
emailField=new JTextField(21);
addrArea=new JTextArea(2,21);
addrArea.setLineWrap(true);
zipField=new JTextField(7);
tipArea=new JTextArea(3,25);
tipArea.setLineWrap(true);
//tipArea.setText("这是我的第一个java程序，虽然有些粗糙，但毕竟是自己写的，多多加油多多鼓励！！");
qqField=new JTextField(10);
qq=new JLabel("Q Q");
updata=new JButton("更新记录");
//updata.setHorizontalAlignment(JButton.LEFT);
//updataI=new ImageIcon("updata.gif");
//updata.setIcon(updataI);
del=new JButton("删除记录");
addTG=new JButton("添加到组");
addTG.setEnabled(false);
panel1=new JPanel();
panel1.setLayout(new FlowLayout(FlowLayout.LEFT,5,4));
panel1.add(name);
panel1.add(nameField);//6
panel1.add(sex);
panel1.add(sexField);//2
panel1.add(group);
panel1.add(groupField);//6
panel1.add(mNumber);
panel1.add(mNumberField);//18
panel1.add(pNumber);
panel1.add(pNumberField);//18
panel1.add(addr);
panel1.add(new JScrollPane (addrArea));//45
panel1.add(qq);
panel1.add(qqField);//12
panel1.add(zip);
panel1.add(zipField);//8
panel1.add(email);
panel1.add(emailField);//20
panel1.add(tip);
panel1.add(new JScrollPane (tipArea));//100
panel1.setBackground(Color.WHITE);
panel2=new JPanel();
FlowLayout flow=new FlowLayout(FlowLayout.CENTER, 5,0);
flow.setAlignment(FlowLayout.RIGHT);
panel2.setLayout(flow);
panel2.add(updata);
panel2.add(del);
panel2.add(addTG);
panel2.setBackground(Color.white);
Container mainWindow=getContentPane();
mainWindow.add(innerWest,BorderLayout.WEST);
mainWindow.add(panel1,BorderLayout.CENTER);
mainWindow.add(panel2,BorderLayout.SOUTH);
pocessor=new Pocessor();
pocessor.loadGroup();
this.addWindowListener(
new WindowAdapter(){
public void windowClosing(WindowEvent w)
{
pocessor.savePerson(pastSelection);
}
}
);
setSize(392,336);
this.setResizable(false);
show();
}
问题点数：20、回复次数：14Top
1 楼JPower_pro（J动力）回复于 2005-10-01 13:04:30 得分 0
接上贴
private class Record{
private String name,sex,group,mNumber,pNumber,zip,addr,email,tip,QQ;
public void setName(String n)
{
name=n;
}
public String getName()
{
return name;
}
public void setSex(String s)
{
sex=s;
}
public String getSex()
{
return sex;
}
public void setGroup(String g)
{
group=g;
}
public String getGroup()
{
return group;
}
public void setmNumber(String m)
{
mNumber=m;
}
public String getmNumber()
{
return mNumber;
}
public void setpNumber(String p)
{
pNumber=p;
}
public String getpNumber()
{
return pNumber;
}
public void setZip(String z)
{
zip=z;
}
public String getZip()
{
return zip;
}
public void setAddr(String a)
{
addr=a;
}
public String getAddr()
{
return addr;
}
public void setQQ(String q)
{
QQ=q;
}
public String getQQ()
{
return QQ;
}
public void setEmail(String e)
{
email=e;
}
public String getEmail()
{
return email;
}
public void setTip(String t)
{
tip=t;
}
public String getTip()
{
return tip;
}
}
Top
2 楼JPower_pro（J动力）回复于 2005-10-01 13:12:02 得分 0
接上贴
private class Pocessor {
public void loadGroup() throws Exception
{
File gRecord=new File("grecord");
try{
gInfo=new RandomAccessFile(gRecord,"rw");
while(true)
{
//groupName=new String("");
groupName=gInfo.readUTF();
sGroup.addItem(groupName);
}
}
catch(EOFException eof){
//gInfo.close();
}
catch(IOException err){
JOptionPane.showMessageDialog(null,"加载发生错误","加载失败！"
,JOptionPane.ERROR_MESSAGE);
}
finally{
gInfo.close();
}
File sys=new File("SysInfo");
RandomAccessFile test=new RandomAccessFile(sys,"r");
if(test.readInt()>0)
{
sGroup.setSelectedIndex(0);
selectedGDisplay();
}
test.close();
}
public void selectedGDisplay() throws Exception
{
int bound,cout;
bound=sGroup.getSelectedIndex();
if(pastSelection!=bound)
{
savePerson(pastSelection);
}
pastSelection=bound;
File pRecord=new File("precord");
try{
pInfo=new RandomAccessFile(pRecord,"rw");
pInfo.seek(bound*470);
for(cout=0;cout<50;cout++)
{
records[cout].setName(pInfo.readUTF());
if(records[cout].getName()!="")
{
//nameList.add(records[cout].getName());
}
records[cout].setSex(pInfo.readUTF());
records[cout].setGroup(pInfo.readUTF());
records[cout].setmNumber(pInfo.readUTF());
records[cout].setpNumber(pInfo.readUTF());
records[cout].setAddr(pInfo.readUTF());
records[cout].setQQ(pInfo.readUTF());
records[cout].setZip(pInfo.readUTF());
records[cout].setEmail(pInfo.readUTF());
records[cout].setTip(pInfo.readUTF());
}
}
catch(EOFException eof){
}
catch(IOException IOExcept){
JOptionPane.showMessageDialog(null,"无法加载组"+sGroup.getActionCommand(),
"加载失败",JOptionPane.ERROR_MESSAGE);
}
finally{
pInfo.close();
}
nameList.setSelectedIndex(0);
selectedPDisplay();
}
public void selectedPDisplay()
{
int cout;
cout=nameList.getSelectedIndex();
if(records[cout].getName()!="")
{
nameField.setText(records[cout].getName());
sexField.setText(records[cout].getSex());
groupField.setText(records[cout].getGroup());
mNumberField.setText(records[cout].getmNumber());
pNumberField.setText(records[cout].getpNumber());
zipField.setText(records[cout].getZip());
qqField.setText(records[cout].getQQ());
emailField.setText(records[cout].getEmail());
tipArea.setText(records[cout].getTip());
addrArea.setText(records[cout].getAddr());
}
}
public void addGroup() throws Exception
{
String add;
int bound=sGroup.getMaximumRowCount();
add=JOptionPane.showInputDialog(null,"请输入组名（不超过6个字）");
if(add.length()>6 | add=="")
{
JOptionPane.showMessageDialog(null,"非法的输入！","错误",
JOptionPane.ERROR_MESSAGE);
return;
}
File gRecord=new File("grecord");
File pRecord=new File("precord");
try{
gInfo=new RandomAccessFile(gRecord,"rw");
gInfo.seek(gInfo.length()-1);
gInfo.writeUTF(add);
pInfo=new RandomAccessFile(pRecord,"rw");
pInfo.seek(bound*470);
for(bound=0;bound<50;bound++)
{
records[bound].setName(" ");
records[bound].setSex(" ");
records[bound].setGroup(" ");
records[bound].setmNumber(" ");
records[bound].setpNumber(" ");
records[bound].setZip(" ");
records[bound].setAddr(" ");
records[bound].setQQ(" ");
records[bound].setEmail(" ");
records[bound].setTip(" ");
}
pInfo.close();
}
catch(IOException IOExcept){
JOptionPane.showMessageDialog(null,"写入组失败！","错误",
JOptionPane.ERROR_MESSAGE);
}
finally{
gInfo.close();
}
}
public void addPersonDialog()
{
int bound=0;
// bound=nameList.getItemCount();
if(records[bound].getName()!="")
{
JOptionPane.showMessageDialog(null,"该组记录已满！","记录已满",
JOptionPane.WARNING_MESSAGE);
}
else{
JOptionPane.showMessageDialog(null,"请在右边输入新联系人信息。",
"新建联系人",JOptionPane.INFORMATION_MESSAGE);
addTG.setEnabled(true);
}
}
（Pocessor类未完）Top
3 楼JPower_pro（J动力）回复于 2005-10-01 13:13:28 得分 0
接上贴
public void addPerson()
{
String n,s,g,m,p,a,q,e,t,z;
StringBuffer infoBuffer;
int cout=0;
n=new String(nameField.getText());
s=new String(sexField.getText());
g=new String(groupField.getText());
m=new String(mNumberField.getText());
p=new String(pNumberField.getText());
a=new String(addrArea.getText());
q=new String(qqField.getText());
e=new String(emailField.getText());
t=new String(tipArea.getText());
z=new String(zip.getText());
if(testInfo(n,s,g,m,p,a,q,e,t,z))
{
cout=nameList.getSelectedIndex();
infoBuffer=new StringBuffer(n);
; infoBuffer.setLength(6);
records[cout+1].setName(new String(infoBuffer).replace('\0',' '));
infoBuffer=new StringBuffer(s);
; infoBuffer.setLength(2);
records[cout+1].setSex(new String(infoBuffer).replace('\0',' '));
infoBuffer=new StringBuffer(g);
; infoBuffer.setLength(6);
records[cout+1].setGroup(new String(infoBuffer).replace('\0',' '));
infoBuffer=new StringBuffer(m);
; infoBuffer.setLength(18);
records[cout+1].setmNumber(new String(infoBuffer).replace('\0',' '));
infoBuffer=new StringBuffer(p);
; infoBuffer.setLength(18);
records[cout+1].setpNumber(new String(infoBuffer).replace('\0',' '));
infoBuffer=new StringBuffer(a);
; infoBuffer.setLength(45);
records[cout+1].setAddr(new String(infoBuffer).replace('\0',' '));
infoBuffer=new StringBuffer(q);
; infoBuffer.setLength(12);
records[cout+1].setQQ(new String(infoBuffer).replace('\0',' '));
infoBuffer=new StringBuffer(z);
; infoBuffer.setLength(8);
records[cout+1].setZip(new String(infoBuffer).replace('\0',' '));
infoBuffer=new StringBuffer(e);
; infoBuffer.setLength(20);
records[cout+1].setEmail(new String(infoBuffer).replace('\0',' '));
infoBuffer=new StringBuffer(t);
; infoBuffer.setLength(100);
records[cout+1].setTip(new String(infoBuffer).replace('\0',' '));
nameString[cout+1]=records[cout+1].getName();
nameList=new JList(nameString);
nameList.setSelectedIndex(cout+1);
selectedPDisplay();
}
}
public boolean testInfo(String a1,String a2,String a3,String a4,String a5,
String a6,String a7,String a8,String a9,String a10)
{
if(a1.length()>6&a2.length()>2&a3.length()>6&a4.length()>18&a5.length()>18&a6.length()>45&a7.length()>12&a8.length()>20&a9.length()>100&a10.length()>8)
{
JOptionPane.showMessageDialog(null,"输入规则：\n姓名小于6个字\n性别小于2个字\n手机小于18个字\n电话小于18个字\n邮编小于8个字\nQQ小于12个字\nEmail小于20个字\n地址小于45个字\n备注小于100个字",
"输入信息长度非法",JOptionPane.ERROR_MESSAGE);
return false;
}
else{
return true;
}
}
public void delPerson()
{
int cout,n;
cout=nameList.getSelectedIndex();
if(cout==49)
{
records[cout].setName("");
nameList.remove(cout);
return;
}
else
{
for(n=cout+1;n<50&records[n].getName()!="";n++)
{
records[n-1].setName(records[n].getName());
records[n-1].setSex(records[n].getSex());
records[n-1].setGroup(records[n].getGroup());
records[n-1].setmNumber(records[n].getmNumber());
records[n-1].setpNumber(records[n].getpNumber());
records[n-1].setZip(records[n].getZip());
records[n-1].setAddr(records[n].getAddr());
records[n-1].setEmail(records[n].getEmail());
records[n-1].setTip(records[n].getTip());
records[n-1].setQQ(records[n].getQQ());
}
records[n-1].setName("");
nameList.remove(cout);
}
}
public void savePerson(int past) throws Exception
{
int cout;
File pRecord=new File("precord");
try{
pInfo=new RandomAccessFile(pRecord,"rw");
pInfo.seek(past*470);
for(cout=0;cout<50;cout++)
{
pInfo.writeUTF(records[cout].getName());
pInfo.writeUTF(records[cout].getSex());
pInfo.writeUTF(records[cout].getGroup());
pInfo.writeUTF(records[cout].getmNumber());
pInfo.writeUTF(records[cout].getpNumber());
pInfo.writeUTF(records[cout].getAddr());
pInfo.writeUTF(records[cout].getQQ());
pInfo.writeUTF(records[cout].getZip());
pInfo.writeUTF(records[cout].getTip());
}
}
catch(IOException IOExcept)
{
JOptionPane.showMessageDialog(null,"写入文件失败！","保存失败",
JOptionPane.ERROR_MESSAGE);
}
finally{
pInfo.close();
}
}
public void exit() throws Exception
{
savePerson(pastSelection);
System.exit(0);
}
}（Pocessor类完）
public static void main(String args[]) throws Exception
{
Messagelist application=new Messagelist();
}
}
Top
4 楼notruiyi（什么乱七八糟的）回复于 2005-10-01 13:27:52 得分 0
public static void main(String args[]) throws Exception
{
try{
Messagelist application=new Messagelist();
}catch(Exception e){
System.out.println("Exception occured in Messagelist constructor:"e.getMessage());
}
}Top
5 楼JPower_pro（J动力）回复于 2005-10-01 17:52:08 得分 0
自己顶一下Top
6 楼crazycy（崔毅，blog:http://www.blogjava.net/crazycy/）回复于 2005-10-01 18:56:45 得分 0
CS结构的程序，你如果使用了事件监听机制，你应该使这个类继承java.awt.event下的***Listener方法Top
7 楼Nomad_K（细菜）回复于 2005-10-02 14:30:18 得分 0
看得头晕~楼上的接该是实现接口吧，！或者是继承一个Adapter！自己实现某些要用到的方法！
如果是实现接口的话，要把源接口的所有方法都实现掉！Top
8 楼dxadnwfn（可米第二）回复于 2005-10-02 18:20:24 得分 0
是你的异常没有抛出,抛出异常就好了Top
9 楼dxadnwfn（可米第二）回复于 2005-10-02 18:22:27 得分 0
cGroup.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent E) {
try {
pocessor.addGroup();
} catch (Exception ex) {
}
}
}
);Top
10 楼format_jade（至尊玉）回复于 2005-10-02 18:33:31 得分 0
下面是我对异常处理的体会，不一定真确，楼主参考一下！
异常处理机制可以这样描述：
1，异常处理是针对方法的。也就是说只有方法才能够抛出异常和需要捕获异常；
2，对一个方法，如果在这个方法内部有可能发生异常，则这个方法有两种选择：
要么，在方法内部用try..catch来捕获异常；
要么，直接申明这个方法抛出异常，即在方法后面跟一个throws语句，
这个throws语句申明抛出的异常也就是在本方法种有可能发生的异常；
throws XXXException语句代表这个方法如果发生了XXXException，本方法
不做处理，直接交给本方法的调用者去处理，如果本方法的调用者还不处理，也声
抛出异常，那同理，本方法的调用者的调用者则应该处理这个异常，依次类推，
最终的调用者肯定是main()方法，如果你的main()方法也声明为抛出异常，那处理
异常的任务就会交给虚拟机来处理，虚拟机处理就比较霸道了，它才不会象你
写的try...catch语句还可以继续执行程序，虚拟机只要接到异常，马上终止程序，
所以如果你想要自己的程序发生异常后还可以运行，那就不要总是throws异常，
至少不要逐级抛给虚拟机；
3，2所描述的有一个特例：就是当这个异常是个RuntimeException，即运行时异常的时候，我们既可以不try...catch它，也可以不throws它，因为它是否会发生异常到运行的时候才可以判断出来；
最常见的就是被0除的异常，就是个运行时异常；RuntimeException的子类都是运行时异常；
4，如果一个接口的方法后面并没有throws XXXException这样语句，而在你对该接口的实现类的方法后面throws XXXException，那自然会“cannot implemnt *(java.awt.event.*) ”，因为接口中定义的方法和你的实现类中写的方法不是同一个方法呀，这代表你根本就没实现接口中的那个方法，而是写了一个和接口的那个方法名字相同的另有个方法而已；Top
11 楼dxadnwfn（可米第二）回复于 2005-10-02 18:40:31 得分 0
File gRecord = new File("grecord");
这句什么意思,是不是出错了啊,文件的载入也要扩展名的啊
Top
12 楼dxadnwfn（可米第二）回复于 2005-10-02 18:43:16 得分 0
看见请回答
Top
13 楼Rock_9（）回复于 2005-10-02 21:08:42 得分 0
看着都觉得头晕，帮你顶一下吧！Top
14 楼datalover（白发始立发奋志）回复于 2005-10-02 23:20:03 得分 0
是啊，太多了，看起来要很多时间哦，建议你先写个框架，然后再往里面添东西，添点，调试一下。
建立一个.bat文件用来调试就OK了Top
