import java.awt.Point;class ReferenceTest {
public static void main(String[] arguments){
Point pt1, pt2;
pt1=new Point(100,100);
pt2=pt1; pt1.x=200;
pt2.y=200;
system.out.Println("Point1:"+pt1.x+","+"pt1.y");
system.out.Println("Point2:"+pt2.x+","+"pt2.y");
}
}后两行说包system不存在怎么回事
public static void main(String[] arguments){
Point pt1, pt2;
pt1=new Point(100,100);
pt2=pt1; pt1.x=200;
pt2.y=200;
system.out.Println("Point1:"+pt1.x+","+"pt1.y");
system.out.Println("Point2:"+pt2.x+","+"pt2.y");
}
}后两行说包system不存在怎么回事
location:class java.io.PrintStream
System.out.Println("Point1:"+pt1.x+","+"pt1.y");
^
多谢了