Throwable类toString()方法 (Throwable Class toString() method)

• toString() Method is available in java.lang package.

  toString()方法在java.lang包中可用。

• toString() Method is used to return a short description of the exception.

  toString()方法用于返回对该异常的简短描述。

• toString() Method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  toString()方法是一种非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

• toString() Method does not throw an exception at the time of string representation about the exception.

  toString()方法在有关异常的字符串表示时不会引发异常。

Syntax:

句法：

    public String toString();

Parameter(s):

参数：

• It does not accept any parameter.

  它不接受任何参数。

Return value:

返回值：

The return type of the method is String, it represents string for the exception.

方法的返回类型为String ，它表示异常的字符串。

Example:

例：

// Java program to demonstrate the example 
// of String toString() method of Throwable 
public class ToString {
public static void main(String args[]) throws Exception {
try {
div(-3, 0);
} catch (Exception ex) {
System.out.println("ex.toString() :" + ex.toString());
}
}
// This method divide number by 0
public static void div(int d1, int d2) throws Exception {
int res = d1 / d2;
System.out.println("res :" + res);
}
}

Output

输出量

ex.toString() :java.lang.ArithmeticException: / by zero

翻译自: https://www.includehelp.com/java/throwable-tostring-method-with-example.aspx