Java中可抛出的 getLocalizedMessage() 方法及示例

Throwable 类的getLocalizedMessage()方法用于在发生异常时获取 Throwable 对象的特定于语言环境的描述。它帮助我们根据本地的Specific消息修改Throwable对象的描述。对于不覆盖该方法的子类，该方法的默认实现返回与getMessage()相同的结果。

句法：

public String getLocalizedMessage()

返回值：此方法在发生异常时返回 Throwable 对象的特定于语言环境的描述。

下面的程序演示了 Throwable 类的 getLocalizedMessage() 方法：

示例 1：

// Java program to demonstrate
// the getLocalizedMessage() Method.
  
import java.io.*;
  
class GFG {
  
    // Main Method
    public static void main(String[] args)
        throws Exception
    {
  
        try {
            // add the numbers
            addPositiveNumbers(2, -1);
        }
        catch (Exception e) {
            System.out.println("LocalizedMessage = "
                               + e.getLocalizedMessage());
        }
    }
  
    // method which adds two positive number
    public static void addPositiveNumbers(int a, int b)
        throws Exception
    {
  
        if (a < 0 || b < 0) {
  
            throw new Exception("Numbers are not Positive");
        }
        else {
  
            System.out.println(a + b);
        }
    }
}

输出：

LocalizedMessage = Numbers are not Positive

示例 2：

// Java program to demonstrate
// the ensureCapacity() Method.
  
import java.io.*;
  
class GFG {
  
    // Main Method
    public static void main(String[] args)
        throws Exception
    {
  
        try {
            testException();
        }
  
        catch (Throwable e) {
            System.out.println("LocalizedMessage of Exception : "
                               + e.getLocalizedMessage());
        }
    }
  
    // method which throws IndexOutOfBoundsException
    public static void testException()
        throws IndexOutOfBoundsException
    {
  
        throw new IndexOutOfBoundsException(
            "Forcefully Generated Exception");
    }
}

输出：

LocalizedMessage of Exception : Forcefully Generated Exception

参考：
https://docs.oracle.com/javase/10/docs/api/java Java()