testlayout.java

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import  java.applet.Applet;
import  java.awt.*;

public  class  TestLayout  extends  Applet  
{
   CheckboxGroup optGroup; 
   Checkbox opt1, opt2, opt3;
    public  void  init( )
   {  
	  setLayout( new FlowLayout(FlowLayout.LEFT));
	  optGroup = new  CheckboxGroup();
      opt1 = new  Checkbox( "选项1",optGroup, false );
      add( opt1 );
      opt2 = new  Checkbox( "选项2",optGroup, false );
      add( opt2 );
      opt3 = new  Checkbox( "选项3",optGroup, false );
      add( opt3 );
   }
}