Java 异常整合练习

 

 

 1 package com.bytezero.throwable2;

/**
 * 
 * @Description   异常练习
 * @author Bytezero·zhenglei!        Email:420498246@qq.com
 * @version
 * @date 上午9:01:38
 * @
 *
 */
public class EcmDef {
    public static void main(String[] args) {
        
        try {
                int i= Integer.parseInt(args[0]);
                int j= Integer.parseInt(args[1]);
                
                int result =ecm(i,j);
                
                System.out.println(result);
            
        }catch(NumberFormatException e) {
            System.out.println("数据类型不一致");
            
        }catch(ArrayIndexOutOfBoundsException e) {
            System.out.println("缺少命令行参数");
        }catch(ArithmeticException e) {
            System.out.println("除0");
        }catch(EcDef e) {
            System.out.println(e.getMessage());
            
        }
        
    }
    
    public  static int ecm(int i ,int j) throws EcDef {
        if(i <0 || j<0) {
            
            throw new EcDef("分子或分母为负数");
        }
        return i/j;
    }
}

package com.bytezero.throwable2;

//自定义异常类
public class EcDef extends Exception {
    
    static final long serialVersionUID = -3387516124229948L;
    
    public EcDef() {
        
    }
    public EcDef(String msg) {
        
        super(msg);
    }

}