Arrays Copy The following example shows how to use Arrays.copyOf API.
It copies the specified array, truncating or padding with default uninitialized value
so the copy has the specified length.
package com.bethecoder.tutorials.utils.arrays; import java.util.Arrays; public class ArraysCopy { public static void main ( String [] args ) { int [] intArray = { 7 , 8 , 6 } ; System.out.println ( "Before copy : " + Arrays.toString ( intArray )) ; //Increase the length of array to 6 and copy the Array int [] intArray2 = Arrays.copyOf ( intArray, 6 ) ; intArray2 [ 5 ] = 1729 ; System.out.println ( "Copied array : " + Arrays.toString ( intArray2 )) ; System.out.println ( "Original array : " + Arrays.toString ( intArray )) ; System.out.println () ; boolean [] boolArray = { true, true, true, true, true, true } ; System.out.println ( "Before copy : " + Arrays.toString ( boolArray )) ; //Decrease the length of array by 4 and copy the Array boolean [] boolArray2 = Arrays.copyOf ( boolArray, 4 ) ; boolArray2 [ 2 ] = false ; boolArray2 [ 3 ] = false ; System.out.println ( "Copied array : " + Arrays.toString ( boolArray2 )) ; System.out.println ( "Original array : " + Arrays.toString ( boolArray )) ; } }
Before copy : [7, 8, 6]
Copied array : [7, 8, 6, 0, 0, 1729]
Original array : [7, 8, 6]
Before copy : [true, true, true, true, true, true]
Copied array : [true, true, false, false]
Original array : [true, true, true, true, true, true]
