自定义包时出现的问题package com.juj;public class Point{ private int x,

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自定义包时出现的问题
package com.juj;
public class Point
{
private int x,y;
public Point() {}
public Point(int x,int y) {this.x=x;this.y=y;}
public void setx(int a) {x=a;}
public int getx() {return x;}
public void sety(int a) {y=a;}
public int gety() {return y;}
}这是我定义包的源代码放在c:\jdk1.6.0_02\jre\classes下面的
import com.juj.Point;
public class MDPoint2
{
public static void main(String args[])
{
Point a=new Point();
Point p=new Point(3,5);
p.setx(6);
System.out.println("P 点间的x,y坐标为："+p.getx()+","+p.gety());
System.out.println("a 点间的x,y坐标为："+a.getx()+","+a.gety());
}
}这是我写的一个引用上面包的类的一个程序编译时都通过了运行的时候
java MDPoint2以后
Exception in thread "main" java.lang.NoClassDefFoundError:com/juj/Point at MDPoint2.main实在不知道怎么办了各位大虾帮帮忙

你应该先搞清楚包的概念
理解清楚后,你这里只要把你编译好的Point.class放在目录c:\jdk1.6.0_02\jre\classes\com/juj下面就可以了

自定义包时出现的问题package com.juj;public class Point{ private int x, class Point{ protected int x,y; public Point(){} public Poin 已知有如下类的定义:public class Point { private double x,y; public Po 这道题我搞不懂,20.public class SychTest{ private int x; private int #include class base { Private:int x,y; public:void setxy(int class Point{ private double x; private double y; Point(doubl class Point { int x_,y_; public:Point():x_(0),y_(0){} Point( C++中 private和public的问题 1.给出如下代码：class Test{ private int m; public static void fun() X=xx,#include#includeusing namespace std;class point {public 类定义为什么要这样class point{public:double x,y;point(){};point(doubl class A{int i,j;public:static int x;public:A(int a = 0,int b