get set 用法

最新推荐文章于 2021-02-12 22:16:44 发布

原创最新推荐文章于 2021-02-12 22:16:44 发布 · 344 阅读

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CC 4.0 BY-SA版权

本文介绍了使用Java实现矩形和直角三角形图形绘制的基本原理与代码实现，包括类继承、属性设置与图形绘制方法。

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public class Arist {
public void drawShape(Shape x) {
x.draw();
}

public static void main(String[] args) {
Arist a = new Arist();
a.drawShape(new Rectangle(8,4));
a.drawShape(new RightTriangle(8,4));
}

}

public class Rectangle extends Shape {

private int width;

private int height;

public Rectangle(int width, int height) {
this.width = width;
this.height = height;
}

public int getWidth() {
return this.width;

}

public void setWidth(int width) {
if (width >= 1 && width <= 15) {
this.width = width;
}

}

public int getHeight() {
return this.height;
}

public void setHeight(int height) {
if (height > 15 || height < 1) {
return;
}
this.height = height;
}

public void draw() {

for (int i = 0; i < this.height; i++) {
for (int j = 0; j < this.width; j++) {
if (i == 0 || i == this.height - 1 || j == 0
|| j == this.width - 1) {
System.out.println("*");
} else {
System.out.print(" ");

}
System.out.println();
}

}
}

}

public class RightTriangle extends Shape{

private int base;

private int height;

public RightTriangle(int base,int height){
this.base=base;
this.height=height;
}
public int getbase(){
return this.base;
}
public void setbase(int base){
if(base>=1 && base<=20){
this.base=base;
}

}
public int getheight(){
return this.height;
}
public void setheight(int height){
if(height<1||height>20){
return;
}
this.height=height;
}
public void draw() {
System.out.println("打印一个直角三角形");
}
}