ecliplse调试程序报错

[wq00168]

import java.util.*;
public class CloneTest
{

public static void main(String[] args)
{
try
{
Employee original = new Employee("John Q.Public",50000);
original.setHireDay(2000,1,1);
Employee copy = original.clone();
copy.raiseSalary(10);
copy.setHireDay(2002,12,31);
System.out.println("original="+original);
System.out.println("copy="+copy);

}
catch (CloneNotSupportedException e)
{
e.printStackTrace();
}

}

}

class Employee implements Cloneable
{
public Employee (String n, double s)
{
name=n;
salary=s;
}
public Employee clone() throws CloneNotSupportedException
{
Employee cloned = (Employee)super.clone();
cloned.hireDay = (Date)hireDay.clone();

return cloned;
}
public void setHireDay(int year,int month,int day)
{
hireDay= new GregorianCalendar(year,month-1,day).getTime();

}
public void raiseSalary(double byPercent)
{
double raise = salary*byPercent/100;
salary+=raise;
}
public String toString()
{
return "Employee [name="+name+",salary="+salary+",hireDay="+hireDay+"]";

}

private String name;
private double salary;
private Date hireDay;

}



报错为：Exception in thread "main" java.lang.NoSuchMethodError: Employee.setHireDay(III)V
at CloneTest.main(CloneTest.java:9)
不知道这个是什么原因？请各位XDJM看看，小弟谢谢了

[wq00168]

请问一下，怎么clear?具体命令是什么？

[notlogin]

菜单栏里有个 Project，中文的话是--项目，这个菜单里有个 clear 选项，然后clear一下你的项目，可以删除原来编译好的class，让Eclipse重新编译一下。

有时候是有这种事的，明明没错Eclipse却报错，clear一下就好了。

[土地公公]

没有错啊。

[wq00168]

哦，好的，谢谢

[wq00168]

import java.awt.*;
import java.awt.Event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.Timer;
public class InnerClassTest
{

	
	public static void main(String[] args) 
	{
		TalkingClock clock = new TalkingClock(1000,true);
		clock.start();
		JOptionPane.showMessageDialog(null,"Quit pragram?");
		System.exit(0);
	}

}

class TalkingClock 
{
	public TalkingClock(int interval, boolean beep)
	{
		this.interval = interval;
		this.beep = beep;
	}
	public void start()
	{
		ActionListener listener = new TimePrinter();
		Timer t = new Timer(interval,listener);
		t.start();
	}
	private int interval;
	private boolean beep;
	
	private class TimePrinter implements ActionListener
	{
		public void actionPerformed(ActionEvent event)
		{
			Date now = new Date();
			System.out.println("At the tone,the time is "+now);
			if(beep) Toolkit.getDefaultToolkit().beep();
		}
	}
}
	

这个报错：Exception in thread "main" java.lang.Error: 无法解析的编译问题：
ActionListener 无法解析为类型

at TalkingClock.start(InnerClassTest.java:29)
at InnerClassTest.main(InnerClassTest.java:13)
这个是什么原因？

[doney_dongxiang]

俺也重试了一下啊，没有问题，估计楼主的eclipse需要重新安装一下啊

[wq00168]

嗯，马上重装

[邵钏]

import java.util.*;
public class CloneTest
{

public static void main(String[] args)
{
try
{
Employee original = new Employee("John Q.Public",50000);
original.setHireDay(2000,1,1);
Employee copy = original.clone();
copy.raiseSalary(10);
copy.setHireDay(2002,12,31);
System.out.println("original="+original);
System.out.println("copy="+copy);

}
    catch  (CloneNotSupportedException e)
    {
    e.printStackTrace();
    }
 
}

}

class Employee implements Cloneable
{
    public Employee (String n, double s)
    {
    name=n;
    salary=s;
    }
    public Employee clone() throws CloneNotSupportedException
    {
    Employee cloned = (Employee)super.clone();
    cloned.hireDay = (Date)hireDay.clone();
   
    return cloned;
    }
    public void setHireDay(int year,int month,int day)
    {
    hireDay= new GregorianCalendar(year,month-1,day).getTime();
   
    }
    public void raiseSalary(double byPercent)
    {
    double raise = salary*byPercent/100;
    salary+=raise;
    }
    public String toString()
    {
    return "Employee [name="+name+",salary="+salary+",hireDay="+hireDay+"]";
   
    }
   
    private String name;
    private double salary;
    private Date hireDay;
   
} 

[wq00168]

这个跟我的是一样的啊，可是就是有问题，我用eclipse运行编译的

[musecangying007]

晕死，我在Eclipse试了试没报错啊

[wq00168]

在eclipse运行环境中，在class Employee implements Cloneable 这行显示已定义类型Employee
我就知道应该怎么改了？

[邵钏]

[Quote=引用 2 楼 wq00168 的回复:]
这个跟我的是一样的啊，可是就是有问题，我用eclipse运行编译的
[/Quote]

使用“插入源代码”功能，关键词高亮，这样看起来舒服些

[wq00168]

import java.util.*;
public class CloneTest
{

public static void main(String[] args)
{
try
{
Employee original = new Employee("John Q.Public",50000);
original.setHireDay(2000,1,1);
Employee copy = original.clone();
copy.raiseSalary(10);
copy.setHireDay(2002,12,31);
System.out.println("original="+original);
System.out.println("copy="+copy);

}
catch (CloneNotSupportedException e)
{
e.printStackTrace();
}

}

}

class Employee implements Cloneable
{
public Employee (String n, double s)
{
name=n;
salary=s;
}
public Employee clone() throws CloneNotSupportedException
{
Employee cloned = (Employee)super.clone();
cloned.hireDay = (Date)hireDay.clone();

return cloned;
}
public void setHireDay(int year,int month,int day)
{
hireDay= new GregorianCalendar(year,month-1,day).getTime();

}
public void raiseSalary(double byPercent)
{
double raise = salary*byPercent/100;
salary+=raise;
}
public String toString()
{
return "Employee [name="+name+",salary="+salary+",hireDay="+hireDay+"]";

}

private String name;
private double salary;
private Date hireDay;

}

[wq00168]

import java.util.*;
public class CloneTest
{

public static void main(String[] args)
{
try
{
Employee original = new Employee("John Q.Public",50000);
original.setHireDay(2000,1,1);
Employee copy = original.clone();
copy.raiseSalary(10);
copy.setHireDay(2002,12,31);
System.out.println("original="+original);
System.out.println("copy="+copy);

}
    catch  (CloneNotSupportedException e)
    {
    e.printStackTrace();
    }
 
}

}

class Employee implements Cloneable
{
    public Employee (String n, double s)
    {
    name=n;
    salary=s;
    }
    public Employee clone() throws CloneNotSupportedException
    {
    Employee cloned = (Employee)super.clone();
    cloned.hireDay = (Date)hireDay.clone();
   
    return cloned;
    }
    public void setHireDay(int year,int month,int day)
    {
    hireDay= new GregorianCalendar(year,month-1,day).getTime();
   
    }
    public void raiseSalary(double byPercent)
    {
    double raise = salary*byPercent/100;
    salary+=raise;
    }
    public String toString()
    {
    return "Employee [name="+name+",salary="+salary+",hireDay="+hireDay+"]";
   
    }
   
    private String name;
    private double salary;
    private Date hireDay;
   
} 

[wq00168]

你说这个会是什么问题，我这个问题在前面也碰到过，始终不能搞定它

[pengpeng107]

没错呀！！！

[邵钏]

[Quote=引用 8 楼 wq00168 的回复:]
你说这个会是什么问题，我这个问题在前面也碰到过，始终不能搞定它
[/Quote]

我在eclipse上运行了一下，一切正常，没有报错

[wq00168]

那这个程序是没有问题了，那是不是eclipse重新装一下

[邵钏]

把你的报错信息贴上来看一下吧

[notlogin]

clear一下呢？