try，catch处理异常

package zengliang;
import java.util.*;

public class su {
    public static void main(String[] args){
        try{
            Scanner sc=new Scanner(System.in);
            int a, b,k;
            System.out.println("输入两个整型数：");
            a = sc.nextInt();
            b = sc.nextInt();
            k = a/b;
            System.out.println("a除以b的结果为："+k);
    }catch(Exception e){
        //e.printStackTrace();
        System.out.println("除数不能为零");
    }
        }
        
    

}