[Java/Copy] A simple code explanation of the representation of shallow and deep copy arrays. #java #copy

DeepAndShallowCopy.java

/**
 * ShallowCopy
 */ 
int[] a = new int[] {1,2,3};
int[] b = new int[a.length];
b = Arrays.copyOf(a, a.length);

/**
 * DeepCopy
 */ 
int[] c = new int[] {4,5,6};
int[] d = new int[c.length];
System.arraycopy(c, 0, d, 0, d.length);