Java自定义异常

• Z时代
• 2024-01-10
• 分类：综合

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 {
        }
    }
}

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