When comparing Object arrays, null elements are equal. If the elements are not null, Object.equals() is used. : Arrays « Collections Data Structure « Java

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Java » Collections Data Structure » Arrays

When comparing Object arrays, null elements are equal. If the elements are not null, Object.equals() is used.


 



import java.util.Arrays;



public class Main {

  public static void main(String[] argv) throws Exception {



    boolean b = Arrays.equals(new String[] { "a" }, new String[] { "a" });

    b = Arrays.equals(new String[] { null }, new String[] { null }); 

    b = Arrays.equals(new String[] { "a" }, new String[] { null }); 

  }

}

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1.	illustrates how to use some of the methods of the Arrays class:
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3.	Demonstrate use of Arrays.sort on Booleans
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36.	fill to a contiguous range of elements in an array: boolean array
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38.	Fill to a contiguous range of elements in an array: char array
39.	Fill to a contiguous range of elements in an array: short array
40.	Fill to a contiguous range of elements in an array: int array
41.	Fill to a contiguous range of elements in an array: long array
42.	Fill to a contiguous range of elements in an array: float array
43.	Use Arrays.asList() to convert Array to List
44.	Merge (or add) two arrays into one
45.	Fill to a contiguous range of elements in an array: double array
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51.	Shifting Elements in an Array: Shift all elements left by one
52.	Use java.util.Arrays.deepToString() to dump the multi-dimensional arrays
53.	use Arrays.copyOf to copy array
54.	If the element is a primitive type.
55.	Comparing Arrays: null arrays are equal
56.	Compare two boolean arrays and null

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