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@madan712
Created January 7, 2013 13:47
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Different type of ways to iterate a List in java
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
public class IterateList {
public static void main(String[] args) {
List<String> color = new ArrayList<String>();
color.add("Black");
color.add("Blue");
color.add("Green");
color.add("Red");
color.add("Yellow");
System.out.println("method 1 - Basic for loop");
for (int i = 0; i < color.size(); i++) {
System.out.println(color.get(i));
}
System.out.println("method 2 - For each loop");// introduced from Java 5
for (String eachColor : color) {
System.out.println(eachColor);
}
System.out.println("method 3 - While loop");
int i = 0;
while (i < color.size()) {
System.out.println(color.get(i));
i++;
}
System.out.println("method 4 - Using Iterator");
Iterator<String> iterator = color.iterator();
while (iterator.hasNext()) {
System.out.println(iterator.next());
}
System.out.println("method 5 - Using ListIterator");
// ListIterator is used to traverse the list in either direction
ListIterator<String> listIterator = color.listIterator();
while (listIterator.hasNext()) {
System.out.println(listIterator.next());
}
}
}
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