How to Copy One Array to Another in Java ?

How to Copy One Array to Another in Java

Java provides inbuilt methods to copy array. Whether we want a full copy or partial copy of array, we can do it easily using java inbuilt classes.

Object.clone():

Object class provides clone() method and since array in java is also an Object, we can use this method to achieve full array copy.
If you want partial copy of the array we cant’t use this method.

Sample Code in Java

[pastacode lang=”java” manual=”public%20class%20Wiki%0A%7B%20%0A%09public%20static%20void%20main(String%5B%5D%20args)%20%0A%09%7B%20%0A%09%09int%20a%5B%5D%20%3D%20%7B2%2C%208%2C%203%7D%3B%20%0A%0A%09%09%2F%2F%20Copy%20elements%20of%20a%5B%5D%20to%20b%5B%5D%20%0A%09%09int%20b%5B%5D%20%3D%20a.clone()%3B%20%0A%0A%09%09%2F%2F%20Change%20b%5B%5D%20to%20verify%20that%20b%5B%5D%20is%20different%20%0A%09%09%2F%2F%20from%20a%5B%5D%20%0A%09%20%0A%0A%09%09System.out.println(%22Values%20of%20a%5B%5D%20%22)%3B%20%0A%09%09for%20(int%20i%3D0%3B%20i%3Ca.length%3B%20i%2B%2B)%20%0A%09%09%09System.out.print(a%5Bi%5D%20%2B%20%22%20%22)%3B%20%0A%0A%09%09System.out.println(%22%5Cn%5CnValues%20of%20b%5B%5D%20%22)%3B%20%0A%09%09for%20(int%20i%3D0%3B%20i%3Cb.length%3B%20i%2B%2B)%20%0A%09%09%09System.out.print(b%5Bi%5D%20%2B%20%22%20%22)%3B%20%0A%09%7D%20%0A%7D” message=”” highlight=”” provider=”manual”/]

Output

Values of a[] 
2 8 3 

Values of b[] 
2 8 3

How to Copy One Array to Another in Java ?