Enhanced for Loop

The enhanced for loop (sometimes called a "for each" loop) can be used with any class that implements the Iterable interface, such as ArrayList. Here is the previous program, now written using an enhanced for loop.

import java.util.* ;
public class IteratorExampleTwo
{
  public static void main ( String[] args)
  {
    ArrayList<String> names = new ArrayList<String>();

    names.add( "Amy" );    names.add( "Bob" ); 
    names.add( "Chris" );  names.add( "Deb" ); 
    names.add( "Elaine" ); names.add( "Frank" );
    names.add( "Gail" );   names.add( "Hal" );

    for ( String nm : names ) 
      System.out.println( nm );
  }
}

The program does the same thing as the previous program. The enhanced for loop

    for ( String nm : names )
      System.out.println( nm );

accesses the String references in names and assigns them to nm. With an enhanced for loop there is no danger an index will go out of bounds. (There is a colon : separating nm and names in the above. This might be hard to see in your browser.)