Java 异常的Exception e中的egetMessage()和toString()方法的区别

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：
; font-family:" microsoft="" background-color:="" /> 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：由此可以看出，e.toString()获取的信息包括异常类型和异常详细消息，而e.getMessage()只是获取了异常的详细消息字符串。