如何在Java中将Object []转换为String []？ [英] How to convert the Object[] to String[] in Java?

问题描述

我对Java有疑问。我有 Object [] （Java默认，不是用户定义的），我想将其转换为 String [] 。谁能帮我？谢谢。

I have a question about Java. I have an Object[] (Java default, not the user-defined) and I want to convert it to a String[]. Can anyone help me? thank you.

推荐答案

这是转换

for(int i = 0 ; i < objectArr.length ; i ++){  
   try {
      strArr[i] = objectArr[i].toString();
   } catch (NullPointerException ex) {
       // do some default initialization
   }
}  

这是演员

String [] strArr = (String[]) objectArr;  //this will give you class cast exception

更新：

调整1

 String[] stringArray = Arrays.copyOf(objectArray, objectArray.length, String[].class);

Tweak2

 Arrays.asList(Object_Array).toArray(new String[Object_Array.length]);

注意：仅当对象都是字符串时才有效;他的当前代码即使不是

Note:That only works if the objects are all Strings; his current code works even if they are not

forTweak1：仅适用于Java 1.6及以上

forTweak1 :only on Java 1.6 and above

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