squareint.java

经典的<<C how to program>一书第三版的例程。非常适合于C的初学者。

// Fig. 25.8: SquareInt.java
// A programmer-defined square method
import java.awt.Container;
import javax.swing.*;

public class SquareInt extends JApplet {
   public void init()
   {
      String output = "";

      JTextArea outputArea = new JTextArea( 10, 20 );

      // get the applet's GUI component display area
      Container c = getContentPane();

      // attach outputArea to Container c
      c.add( outputArea ); 

      int result;

      for ( int x = 1; x <= 10; x++ ) {
         result = square( x );
         output += "The square of " + x +
                   " is " + result + "\n";
      }

      outputArea.setText( output );
   }
   
   // square method definition 
   public int square( int y )
   {
      return y * y;
   }
}

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