Wanna Copy An Array in Java

The output from this program is: caffein

copyOfRange() Method of java.util.Arrays class

Demo Program

class ArrayCopyOfDemo {
public static void main(String[] args) {
char[] copyFrom = {
'd',
'e',
'c',
'a',
'f',
'f',
'e',
'i',
'n',
'a',
't',
'e',
'd'
};
char[] copyTo = java.util.Arrays.copyOfRange(copyFrom, 2, 9);
System.out.println(new String(copyTo));
}
}

The output from this program is: caffein

The difference between the 2nd and 3rd is that using the copyOfRange method does not require you to create the destination array before calling the method because the destination array is returned by the method. Although it requires fewer lines of code.

Refer java docs by Oracle

https://docs.oracle.com/javase/tutorial/java/nutsandbolts/arrays.html

To copy an array in JAVA we have 3 options.