stringbufferconstructors.java

来自「金旭亮的java教案」· Java 代码 · 共 27 行

// StringBufferConstructors.java
// This program demonstrates the StringBuffer constructors.
import javax.swing.*;

public class StringBufferConstructors {
   public static void main( String args[] )
   {
      StringBuffer buf1, buf2, buf3;
   
      buf1 = new StringBuffer();
      buf2 = new StringBuffer( 10 );
      buf3 = new StringBuffer( "hello" );

      String output =
         "buf1 = " + "\"" + buf1.toString() + "\"" +
         "\nbuf2 = " + "\"" + buf2.toString() + "\"" +
         "\nbuf3 = " + "\"" + buf3.toString() + "\"";

      JOptionPane.showMessageDialog( null, output,
         "Demonstrating StringBuffer Class Constructors",
         JOptionPane.INFORMATION_MESSAGE );

      System.exit( 0 );
   }
}