The listIterator() method of Java.util.Stack class is used to return a list iterator over the elements in this stack (in proper sequence). The returned list iterator is fail-fast.
Syntax:
public ListIterator listIterator()
Return Value: This method returns a list iterator over the elements in this stack (in proper sequence).
Below are the examples to illustrate the listIterator() method.
Example 1:
// Java program to demonstrate // listIterator() method // for String value import java.util.*;
public class GFG1 {
public static void main(String[] argv) throws Exception
{
try {
// Creating object of Stack<Integer>
Stack<String>
stack = new Stack<String>();
// adding element to stack
stack.add( "A" );
stack.add( "B" );
stack.add( "C" );
stack.add( "D" );
// print stack
System.out.println( "Stack: "
+ stack);
// Creating object of ListIterator<String>
// using listIterator() method
ListIterator<String>
iterator = stack.listIterator();
// Printing the iterated value
System.out.println( "\nUsing ListIterator:\n" );
while (iterator.hasNext()) {
System.out.println( "Value is : "
+ iterator.next());
}
}
catch (NullPointerException e) {
System.out.println( "Exception thrown : " + e);
}
}
} |
Output:
Stack: [A, B, C, D] Using ListIterator: Value is : A Value is : B Value is : C Value is : D
Program 2:
// Java code to illustrate lastIndexOf() import java.util.*;
public class StackDemo {
public static void main(String args[])
{
// Creating an empty Stack
Stack<Integer> stack = new Stack<Integer>();
// Use add() method to add elements in the Stack
stack.add( 1 );
stack.add( 2 );
stack.add( 3 );
stack.add( 10 );
stack.add( 20 );
// Displaying the Stack
System.out.println( "Stack: " + stack);
// Creating object of ListIterator<String>
// using listIterator() method
ListIterator<Integer>
iterator = stack.listIterator();
// Printing the iterated value
System.out.println( "\nUsing ListIterator:\n" );
while (iterator.hasNext()) {
System.out.println( "Value is : "
+ iterator.next());
}
}
} |
Output:
Stack: [1, 2, 3, 10, 20] Using ListIterator: Value is : 1 Value is : 2 Value is : 3 Value is : 10 Value is : 20