Comparing Arrays

// null arrays are equal boolean[] bArr1 = null; boolean[] bArr2 = null; boolean b = Arrays.equals(bArr1, bArr2); // true // Compare two boolean arrays bArr1 = new boolean[]{true, false}; bArr2 = new boolean[]{true, false}; b = Arrays.equals(bArr1, null); // false b = Arrays.equals(bArr1, bArr2); // true // There are equals() methods for all eight primitive types b = Arrays.equals(new byte[]{0}, new byte[]{0}); // true b = Arrays.equals(new char[]{'a'}, new char[]{'a'}); // true b = Arrays.equals(new short[]{0}, new short[]{0}); // true b = Arrays.equals(new int[]{0}, new int[]{0}); // true b = Arrays.equals(new long[]{0L}, new long[]{0L}); // true b = Arrays.equals(new float[]{0F}, new float[]{0F}); // true b = Arrays.equals(new double[]{0D}, new double[]{0D}); // true // When comparing Object arrays, null elements are equal. // If the elements are not null, Object.equals() is used. b = Arrays.equals(new String[]{"a"}, new String[]{"a"}); // true b = Arrays.equals(new String[]{null}, new String[]{null}); // true b = Arrays.equals(new String[]{"a"}, new String[]{null}); // false

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