package cn.Douzi.Lab7_4;
public class Triangle {
int a, b, c;
public Triangle(int a, int b, int c) {
super();
this.a = a;
this.b = b;
this.c = c;
}
int getArea() throws Exception {
if (a + b <= c || a + c <= b || b + c <= a) {
throw new IllegalArgumentException("两边之和大于第三边");
}
else {
int p = (a + b + c) / 2;
return (int)Math.sqrt(p * (p - a) * (p - b) * (p - c));
}
}
}
package cn.Douzi.Lab7_4;
public class Lab4 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Triangle tri = new Triangle(5, 1, 4);
try {
int area;
area = tri.getArea();
System.out.println("面积: " + area);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
}
}
}