What is String

• We can copy an array to another by the arraycopy() method of System class..
• we can increase an array length without any data loss by using copyOF method of array .

The example below uses the weekday number to calculate the weekday name:

• We can copy an array to another by the arraycopy() method of System class..
• we can increase an array length without any data loss by using copyOF method of array .

int []b = {1,2,3}; 
int [] n=Arrays.copyOf(b, 5); 
n[3]=4; n[4]=5;
 for(int i=0; 
i<n.length; i++) 
{ System.out.println(n[i]); }