Copy array
static void arraycopy(Object src, int srcPos, Object dest, int destPos, int length)- Copies an array from the specified source array, beginning at the specified position, to the specified position of the destination array.
The arraycopy( ) method can be used to copy quickly an array of any type from one place to another.
public class Main {
static byte a[] = {65, 66, 67, 68, 69, 70, 71, 72, 73, 74};
static byte b[] = {77, 77, 77, 77, 77, 77, 77, 77, 77, 77};
public static void main(String args[]) {
System.out.println("a = " + new String(a));
System.out.println("b = " + new String(b));
System.arraycopy(a, 0, b, 0, a.length);
System.out.println("a = " + new String(a));
System.out.println("b = " + new String(b));
System.arraycopy(a, 0, a, 1, a.length - 1);
System.arraycopy(b, 1, b, 0, b.length - 1);
System.out.println("a = " + new String(a));
System.out.println("b = " + new String(b));
}
}
The output:
a = ABCDEFGHIJ
b = MMMMMMMMMM
a = ABCDEFGHIJ
b = ABCDEFGHIJ
a = AABCDEFGHI
b = BCDEFGHIJJ