// java.util.Arrays.copyOf() method is in java.util.Arrays class.

// It copies the specified array, truncating or padding with false

// (if necessary) so the copy has the specified length.

int[] src = {1,2,3,4};

int[] dst = Arrays.copyOf(src, src.length);

​

// clone() method.

int[] arrClone = src.clone()

// Shallow copy

int[] src = {1,2,3,4,5};

int[] dst = Arrays.copyOf(src, src.length);

​

// Deep copy

int[] dst2 = new int[src.length];

for(int i = 0; i < src.length; i++){

    dst2[i] = src[i];

}

int[] src  = new int[]{1,2,3,4,5};

int[] dest = new int[5];

​

System.arraycopy( src, 0, dest, 0, src.length );

int a[] = {1, 8, 3}; 

// Copy elements of a[] to b[] 

int b[] = a.clone();

int[] a = {1,2,3,4,5};

int[] b = Arrays.copyOf(a, a.length);

// method 

public static int [] copyArray(int [] arr){

      int [] copyArr = new int[arr.length];

      for (int i = 0; i < copyArr.length; i++){

            copyArr[i] = arr[i];

       }

      return copyArr;

}

​

// Arrays. method 

int[] copyCat = Arrays.copyOf(arr, arr.length);

​

// System 

System.arraycopy(x,0,y,0,5); // 5 is array's length 

​

// clone 

y = x.clone(); 

arraycopy(Object src, int srcPos,Object dest, int destPos, int length)