public class Point{
int x,y;
void setPoint(int x,int y){
this.x=x;
this.y=y;
}
void getpoint(){
System.out.println(setPoint(x,y));
}
public static void main(String[] args){
Point ob=new Point();
ob.setPoint(23,32);
ob.getpoint();
}
}
如何修改。
int x,y;
void setPoint(int x,int y){
this.x=x;
this.y=y;
}
void getpoint(){
System.out.println(setPoint(x,y));
}
public static void main(String[] args){
Point ob=new Point();
ob.setPoint(23,32);
ob.getpoint();
}
}
如何修改。
private int x,y;
public void setPoint(int x,int y){
this.x=x;
this.y=y;
}
public void getPoint(){
System.out.println("x="+x+" "+"y="+y);
}
public static void main(String[] args){
Point ob=new Point();
ob.setPoint(23,32);
ob.getpoint();
}
}
System.out.println(setPoint(x,y));
这句错的。上面这个setPoint(x,y)方法是没有返回值你这儿要打印它的返回值当然会错了
public class Point{
int x,y;
private void setPoint(int x,int y){
this.x=x;
this.y=y;
}
private void getpoint(){
System.out.println(x+" " +y);
}
public static void main(String[] args){
Point ob=new Point();
ob.setPoint(23,32);
ob.getpoint();
}
}
看来是初学者,呵呵
public class Point{
int x,y;
void setPoint(int x,int y){
this.x=x;
this.y=y;
}
void getpoint()
{
System.out.println("x="+x+" "+"y="+y);
}public static void main(String[] args){
Point ob=new Point();
ob.setPoint(23,32);
ob.getpoint();
}
}
比如在class Point {
public String toString() {
return x+" "+y;
}
在改改 void getpoint(){
System.out.println(this);//调用自身
}
}就可以了
public String toString() {
return x+" "+y;
}怎么去查需要的函数在那个包里呢?
谢谢大家