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
