Java面向对象练习题之三角形

创建一个三角形类，成员变量三边，方法求周长，创建类主类A来测试它。

private int a;
	private int b;
	private int c;
	
	public int getA() {
		return a;
	}
	public void setA(int a) {
		this.a = a;
	}
	public int getB() {
		return b;
	}
	public void setB(int b) {
		this.b = b;
	}
	public int getC() {
		return c;
	}
	public void setC(int c) {
		this.c = c;
	}
	void qiuZhouChang()
	{
		if(a+b>c&&a+c>b&&c+b>a&&a-b<c&&a-c<b&&b-a<c&&b-c<a&&c-a<b&&c-b<a)
		{
			System.out.println("三角形的周长是："+(a+b+c));
		}
		else
		{
			System.out.println("这三条边无法组成一个三角形");
		}
	}
	public static void main(String[] args) {
		
		SanJiaoXing sanjiaoxing=new SanJiaoXing();
		sanjiaoxing.setA(2);
		sanjiaoxing.setB(1);
		sanjiaoxing.setC(1);
		System.out.println("三角形的三条边长分别是"+sanjiaoxing.getA()+" "+sanjiaoxing.getB()+" "+sanjiaoxing.getC());
		sanjiaoxing.qiuZhouChang();
		
	}

　　

运行结果