面向对象—封装—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 bian1;
    private int bian2;
    private int bian3;
    private int C;
    
    
    public int getC() {
        return C;
    }
    public int getBian1() {
        return bian1;
    }
    public void setBian1(int bian1) {
        this.bian1 = bian1;
    }
    public int getBian2() {
        return bian2;
    }
    public void setBian2(int bian2) {
        this.bian2 = bian2;
    }
    public int getBian3() {
        return bian3;
    }
    public void setBian3(int bian3) {
        this.bian3 = bian3;
    }
    
    
    public sanjiaoxing(int bian1, int bian2, int bian3) {
        super();
        this.bian1 = bian1;
        this.bian2 = bian2;
        this.bian3 = bian3;
    
    }
    public int qiuC()
    {
        if(bian1+bian2>bian3
                &&bian1+bian3>bian2
                &&bian2+bian3>bian1)
        {
            C=this.bian1+this.bian2+this.bian3;
            System.out.println("三角形的周长为："+C);
        }
        return C;
    }
    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        sanjiaoxing sanjiao=new sanjiaoxing(2,3,4);
        sanjiao.qiuC();
        System.out.println("三角形的周长为："+sanjiao.qiuC());
    }