exception

<pre name="code" class="java"></pre><br>
<br>
<p></p>
<pre></pre>
<pre name="code" class="java">package Exception;
import java.util.*;
public class Exception  {
    void aa(int a,int b, int c)throws IllegalArgumentException {
    int []array = new int[]{a,b,c};
    Arrays.sort(array);//增排序，仍在数组里
    if(array[0]+array[1]>array[2]&&array[2]-array[0]<array[1])
        System.out.println("可以成为一个三角形,三条边按大小分别为"+a+","+b+","+c+"");

    else
        throw new IllegalArgumentException("不能组成三角形");

}}
</pre><br>
<pre name="code" class="java">package Exception;

import java.util.Scanner;

public class Text {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
try {
    System.out.println("输入三角形的三条边：");
    Scanner scanner=new Scanner(System.in);
    int a,b,c;
    a=scanner.nextInt();
    b=scanner.nextInt();
    c=scanner.nextInt();
    Exception ex=new Exception();
    ex.aa(a, b, c);
}catch(IllegalArgumentException e) {
    e.printStackTrace();

}
    }

}
</pre><br>
<img src="//img-blog.csdn.net/20171102194856882?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvdmljdG9yX2Zh/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt=""><img src="//img-blog.csdn.net/20171102195035360?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvdmljdG9yX2Zh/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt=""><br>
<p></p>