Java字符串的倒叙

package coding;
import javax.swing.JOptionPane;  
public class ReverseString {  
    public static void main (String args[]){  
        String originalString;  
        String resultString = "";     
        originalString = JOptionPane.showInputDialog("请输入: ");  
        char[] charArray = originalString.toCharArray();  
        for (int i=charArray.length-1; i>=0; i--){  
            resultString += charArray[i];  
        }  
        JOptionPane.showMessageDialog(null, resultString, "Reverse String", JOptionPane.INFORMATION_MESSAGE);  
    }  
}