Reversed String

Write a loop that will create a new string that is the reverse of a given string.

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import javax.swing.JOptionPane;

public class LabExercise16 {
    public static void main(String[] args) {
       
        String str = "";
        String str2="";
       
        str = JOptionPane.showInputDialog("Enter String: ");
        str = str.toLowerCase();

        str2 = new StringBuffer(str).reverse().toString();
       
        JOptionPane.showMessageDialog(null, "Original String: "+str+"\nReversed String: "+str2);
    }
}