For Loop

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Iterating over Array

package com.meritmix.blog.java;
public class ForLoop {
public static void main(String[] args) {
 int a[] = new int[10];
 for (int i = 0; i < a.length; i++) {
  System.out.println(a[i]);
 }
}
}

Iterating over Collection

package com.meritmix.blog.java;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
public class ForLoop {
public static void main(String[] args) {
 Collection<String> a = new ArrayList<String>();
          // any concrete class in collection framework
 for (Iterator<String> itr = a.iterator(); itr.hasNext(); ) {
  System.out.println(itr.next());
 }
}
}

Iterating over Vector using Enumeration Interface

package com.meritmix.blog.java;

import java.util.Enumeration;
import java.util.Vector;
public class ForLoop {
public static void main(String[] args) {
 Vector<String> a = new Vector<String>();
 for (Enumeration<String> itr = a.elements(); itr.hasMoreElements(); ) {
  System.out.println(itr.nextElement());
 }
}
}

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