Java异常中getMessage()与toString的区别

Exception e中e的getMessage()和toString()方法的区别

示例代码1

public class TestInfo {
    private static String str =null;
    public static void main(String[] args) {
        System.out.println("test exception");
        try {
            if(str.equals("name")){
                System.out.println("test exception");
            }
        } catch (Exception e) {
            System.out.println(e.toString());
            System.out.println(e.getMessage());
        }
    }
}

输出结果:
java.lang.NullPointerException
null
示例代码2:

public class TestInfo {
    private static int m = 0;
    public static void main(String[] args) {
        System.out.println("test exception");
        try {
            m = 899/0;
        } catch (Exception e) {
            System.out.println(e.toString());
            System.out.println(e.getMessage());
        }
    }
}

输出结果:

java.lang.ArithmeticException: / by zero
/ by zero
总结:

e.toString(): 获得异常种类和错误信息

e.getMessage():获得错误信息

e.printStackTrace():在控制台打印出异常种类,错误信息和出错位置等
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原文链接:https://blog.csdn.net/opera95/article/details/74885827

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转载自www.cnblogs.com/GG-Bond/p/11364066.html
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