How to determine whether an array is empty in java?

The method to determine whether an array is empty in java is as follows:

One-dimensional array

// 一维数组: int[] array
if(array == null || array.length == 0)
	return true;

Two-dimensional Array

//二维数组: int[][] array
if((array==null||array.length==0)||(array.length==1&&array[0].length==0))
	return true;

Method introduction:

• ##array==null: The array is empty

• array.length==0: Behavior 0, that is, array = {}

• array.length==1 && array[0].length == 0: Behavior 1, the column is 0, that is, array = {{}}

For more java knowledge, please pay attention to

java basic tutorial.

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