complete7_2.java

来自「北京大学出版社的」· Java 代码 · 共 26 行

package questions.c7;
class MyPoint {
   int x;
   int y;
   public MyPoint( int initX, int initY ) {
      x = initX;
      y = initY;
   }
   public void setPoint( int newX, int newY ) {
      x = newX;
      y = newY;
   }
   public String toString() {
      return "(" + x + "," + y + ")";
   }
}
public class Complete7_2 implements Cloneable {
   MyPoint point1 = new MyPoint( 0, 0 );
   public static void main( String[] args )
         throws CloneNotSupportedException {
      Complete7_2 x = new Complete7_2();
      Complete7_2 y = (Complete7_2) x.clone();
      x.point1.setPoint( -5, -10 );
      System.out.println( y.point1 );
   }
}