【JAVA】Java 异常中e的getMessage()和toString()方法的异同

参考链接

• CSDN: Java 异常中e的getMessage()和toString()方法的异同

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

END

原文地址：https://www.cnblogs.com/anliux/p/11644279.html