Thread: for loop in java

Hi,
I am new here and beginner for java.
I wrote a simple List program with for loop.

public class UserDemo {
 
	List<String> userNameList = new ArrayList<String>();
 
	public UserDemo (int number, String prefix){
		for(int i =1; i <= number; i++){
			addUser(prefix +"."+ i);
		}
		System.out.println("User :" +userNameList );
 
		int size = userNameList.size();
		[B]for(int i=0; i<size-1; i++ ){
			for(int j=i; j<size-1; j++){
				makeFriend(userNameList.get(i),  
                                userNameList.get(j+1));
			}
		}[/B]
	}
 
	public void addUser (String username){
		userNameList.add(username);
	}
 
	public void makeFriend (String currentUsername, String  
        previousUsername){
		System.out.println(currentUsername + " is friend of-> "  
                +previousUsername);
	}
 
	public static void main(String[] args) {
		UserDemo au = new UserDemo(5,"newjava");
	}
}

After running this code i m getting output in this form

User :[newjava.1, newjava.2, newjava.3, newjava.4, newjava.5]
newjava.1 is friend of-> newjava.2
newjava.1 is friend of-> newjava.3
newjava.1 is friend of-> newjava.4
newjava.1 is friend of-> newjava.5
newjava.2 is friend of-> newjava.3
newjava.2 is friend of-> newjava.4
newjava.2 is friend of-> newjava.5
newjava.3 is friend of-> newjava.4
newjava.3 is friend of-> newjava.5
newjava.4 is friend of-> newjava.5


but i want output in this form

User :[newjava.1, newjava.2, newjava.3, newjava.4, newjava.5]
newjava.1 is friend of-> newjava.2
newjava.1 is friend of-> newjava.3
newjava.1 is friend of-> newjava.4
newjava.1 is friend of-> newjava.5

newjava.2 is friend of-> newjava.1
newjava.2 is friend of-> newjava.3
newjava.2 is friend of-> newjava.4
newjava.2 is friend of-> newjava.5

newjava.3 is friend of-> newjava.1
newjava.3 is friend of-> newjava.2
newjava.3 is friend of-> newjava.4
newjava.3 is friend of-> newjava.5

newjava.4 is friend of-> newjava.1
newjava.4 is friend of-> newjava.2
newjava.4 is friend of-> newjava.3
newjava.4 is friend of-> newjava.5

newjava.5 is friend of-> newjava.1
newjava.5 is friend of-> newjava.2
newjava.5 is friend of-> newjava.3
newjava.5 is friend of-> newjava.4

Please help me that what to write within for loop, so it will give output
as mentioned.

Thanks in advance!

Thanks its working now,
I should use this.

for(int i=0; i<size; i++ ) {
     for(int j=0; j<size; j++){ 
          if (i!=j)
                makeFriend(userNameList.get(i), userNameList.get(j));
     }
     System.out.println();
 }