int x,y;
final double PI=3.1415926;;
Point()...{
}
Point(int a,int b)...{
x=a;
y=b;
}
public static void main(String[] args)...{
Point pt=new Point();
System.out.println(pt.PI);
}
}
int x,y;
final double PI=3.1415926;;
Point()...{
}
Point(int a,int b)...{
x=a;
y=b;
}
public static void main(String[] args)...{
Point pt=new Point();
System.out.println(pt.PI);
}
}编译运行:

对于常量也可以在类的构造函数中赋值:

class Point...{
int x,y;
final double PI;
Point()...{
PI=3.1415926;
}