Java Program to print the initials of a name with last name written in full

public class Initials
{
public static void initials(String S)
{
int[]A=new int[S.length()];
int sp=0;
for(int i=0; i if(S.charAt(i)==' ')
A[sp++]=i;

if(sp==0)
System.out.println(S);
else
{

System.out.print(S.charAt(0)+". ");

for(int i=0; i
System.out.print(S.charAt(A[i]+1)+". ");


System.out.print(S.substring(S.lastIndexOf(' ')+1, S.length()));
}
}
}