1. package er;
public class point {
int x;
int y;
point() {
}
point(int dx,int dy) {
x+=dx;
y+=dy;
}
void movepoint(int p1,int p2) {
p1=x*2;
p2=y*2;
System.out.println("p1的坐标为"+p1+"
"+"p2的坐标为"+p2);
}
}
package er;
public class person {
public static void main(String[] args) {
point p=new point();
p.x=6;
p.y=2;
p.movepoint(p.x,p.y);
}
}
2.
package er;
public class point {
int length;
int width;
point(int width, int length) {
this.width = width;
this.length = length;
}
void getArea() {
System.err.println("面积："+width*length);
}
void getPer() {
System.out.println("周长："+(width+length)*2);
}
void showAll() {
System.out.println("长："+length+" 宽:"+width);
}
public static void main(String[] args) {
point a = new point(2, 5);
a.getArea();
a.getPer();
a.showAll();
}
}
3.
package er;
public class point {
char color;
int cpu;
point() {
}
point(char color, int cpu) {
this.color = color;
this.cpu = cpu;
}
void point() {
System.out.println("颜色:"+color);
System.out.println( "型号:"+cpu);
}
public static void main(String[] args) {
point p= new point('p',4689);
p.point();
}
}
4.
package test;
public class person {
String name;
double height;
int age;
public void sayHello(){
System.out.println("hello,my name is " + this.name );
}
public void Value(String name, int age, double height){
this.name = name;
this.age = age;
this.height = height;
}
}
package test;
public class personcreate {
public static void main(String[] args) {
// TODO Auto-generated method stub
person p1 = new person();
p1.Value("zhangsan",33,1.74);
p1.sayHello();
person p2 = new person();
p2.Value("lishi",44,1.74);
p2.sayHello();
}
}