// Fig. 11.14: StringBufferInsert.java
// StringBuffer methods insert and delete.
import javax.swing.*;

public class StringBufferInsert {

   public static void main( String args[] )
   {
      Object objectRef = "hello";  
      String string = "goodbye";  
      char charArray[] = { 'a', 'b', 'c', 'd', 'e', 'f' };
      boolean booleanValue = true;
      char characterValue = 'K';
      int integerValue = 7;
      long longValue = 10000000;
      float floatValue = 2.5f;  // f suffix indicates that 2.5 is a float
      double doubleValue = 33.333;
      StringBuffer buffer = new StringBuffer();

      buffer.insert( 0, objectRef );
      buffer.insert( 0, "  " );  // each of these contains two spaces
      buffer.insert( 0, string );
      buffer.insert( 0, "  " );
      buffer.insert( 0, charArray );
      buffer.insert( 0, "  " );
      buffer.insert( 0, charArray, 3, 3 );
      buffer.insert( 0, "  " );
      buffer.insert( 0, booleanValue );
      buffer.insert( 0, "  " );
      buffer.insert( 0, characterValue );
      buffer.insert( 0, "  " );
      buffer.insert( 0, integerValue );
      buffer.insert( 0, "  " );
      buffer.insert( 0, longValue );
      buffer.insert( 0, "  " );
      buffer.insert( 0, floatValue );
      buffer.insert( 0, "  " );
      buffer.insert( 0, doubleValue );

      String output = "buffer after inserts:\n" + buffer.toString();

      buffer.deleteCharAt( 10 );  // delete 5 in 2.5
      buffer.delete( 2, 6 );      // delete .333 in 33.333

      output += "\n\nbuffer after deletes:\n" + buffer.toString();

      JOptionPane.showMessageDialog( null, output,
         "StringBuffer insert/delete", JOptionPane.INFORMATION_MESSAGE );

      System.exit( 0 );
   }

} // end class StringBufferInsert

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