java程序在我编译的时候他说TestPoint.java:20:inner classes cannot have static declarations
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共2个回答
热心网友
我给你改了一下
你看看
class Point1
{
double x, y, z;
Point1(double _x,double _y,double _z)
{
x=_x;
y=_y;
z=_z;
}
void setX(double _x)
{
x=_x;
}
double getDisdance(Point1 p)
{
return (x-p.x)*(x-p.x)+(y-p.y)*(y-p.y)+(z-p.z)*(z-p.z);
}
}
public class TestPoint
{
public TestPoint()
{
}
public static void main(String[] args)
{
Point1 p=new Point1(1.0,2.0,3.0);
Point1 p1=new Point1(0.0,0.0,0.0) ;
System.out.println(p.getDisdance(p1));
p.setX(5.0);
System.out.println(p.getDisdance(new Point1(1.0,1.0,1.0)));
}
}
public static void main(String[] args)必须包含在一个类中 而不能把所有的类放在它中
而且 Point 本身就是一个类了
热心网友
外面的publlic static void main(String[] args){ -------}是不要的吧。
class Point{
double x, y, z;
Point(double _x,double _y,double _z){
x=_x;
y=_y;
z=_z;
}
public void setX(double _x){
x=_x;
}
public double getDisdance(Point p){
return (x-p.x)*(x-p.x)+(y-p.y)*(y-p.y)+(z-p.z)*(z-p.z);
}
}
public class TestPoint{
public static void main(String[] args){
Point p=new Point(1.0,2.0,3.0);
Point p1=new Point(0.0,0.0,0.0) ;
System.out.println(p.getDisdance(p1));
p.setX(5.0);
System.out.println(p.getDisdance(new Point(1.0,1.0,1.0)));
} } 在试试看追问编译成功了 但是运行不行哎 他说Excption in thread "main" java. lang.NoClassDefFoundError:TestPoint
