viewing paste Convert Upper case To Low | Java

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import javax.swing.JOptionPane; //Import utilities required for scanner to work
 
public   class ConvertUpperToLower{
   
   public   static   void  main(String[] args){
 
        String inputString = JOptionPane.showInputDialog(null, "Please enter an upper case character", "CPSC 1150 Lab 2", JOptionPane.QUESTION_MESSAGE);
        char uppercase = inputString.charAt(0);
      
        int offset = (int)'a' - (int)'A';
        char lowercase = (char)((int)uppercase + offset);
      
        JOptionPane.showMessageDialog(null, lowercase); //Express result
 
    }
}
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