12周Java作业
1、
package Class;
public class Class1 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Point p1 = new Point(1,2);
p1.movePoint(1,2);
Point p2 = new Point(4,6);
p2.movePoint(4,6);
}
}
class Point{
int x;int y;
public Point() {
}
public Point(int x0, int y0) {
super();
this.x = x;
this.y = y;
}
void movePoint(int x0, int y0) {
x = x0+1;
y = y0+5;
System.out.println("点的位置为："+x+","+y);
}
}
2、package Class;
public class Class1 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Rectangle r1 = new Rectangle(7,5);
r1.getArea();
r1.getPer();
r1.showAll();
}
}
class Rectangle{
int length;int width;
public Rectangle(int length, int width) {
super();
this.length = length;
this.width = width;
}
void getArea() {
int Area;
Area = length*width;
System.out.println("面积为："+Area);
}
void getPer() {
int Per;
Per = 2*(length+width);
System.out.println("周长为："+Per);
}
void showAll() {
System.out.println("长为："+length);
System.out.println("宽为："+width);
int Area;
Area = length*width;
System.out.println("面积为："+Area);
int Per;
Per = 2*(length+width);
System.out.println("周长为："+Per);
}
}
●3、package Class;
public class Class1 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Notebook n1 = new Notebook('D',10);
n1.showAll();
}
}
class Notebook{
char color;int cpu;
public Notebook(char color, int cpu) {
super();
this.color = color;
this.cpu = cpu;
}
public Notebook() {
}
void showAll() {
System.out.println("该笔记本颜色为："+color);
System.out.println("该笔记本型号为："+cpu);
}
}
