創建一個Point類,有成員變量x,y,方法getX(),setX(),還有一個構造方法初始化x和y。創建類主類A來測試它。
1 public class Print {
2
3 private int x;
4 private int y;
5
6 public int getX() {
7 return x;
8 }
9
10 public void setX(int x) {
11 this.x = x;
12 }
13
14 Print(int num1, int num2) {
15 x = num1;
16 y = num2;
17 }
18
19 public static void main(String[] args) {
20 Print p1 = new Print(3, 4);
21 System.out.println("x=" + p1.getX() + "\ty=" + p1.y);
22
23 p1.setX(15);
24 System.out.println("x=" + p1.getX() + "\ty=" + p1.y);
25
26 }
結果:
