我是新来的Java。我无法检查空。你能见识一下呢？ 我有字符串数组有没有元素。

我想这code

 的String [] K =新的String [3];
如果（K == NULL）{
    的System.out.println（k.length）;
}
 

解决方案

非常precisely 的

 如果（K = NULL和放大器;！＆安培; k.length＆GT; 0）{
    的System.out.println（k.length）;
}其他
    的System.out.println（阵列未初始化或为空）;
 

K！= NULL 将检查阵列不是空。而字符串数组＃长度大于0 将返回不是空[你也可以在退房前长度丢弃空白修剪]。

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I am new to java. Am unable to check for null. Could you enlighten me on this? I have string array which has no elements.

I tried this code

String[] k = new String[3];
if(k==null){
    System.out.println(k.length);
}

Very precisely

if(k!=null && k.length>0){
    System.out.println(k.length);
}else
    System.out.println("Array is not initialized or empty");

k!=null would check array is not null. And StringArray#length>0 would return it is not empty[you can also trim before check length which discard white spaces].

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