复制代码
- //:Choice1.java
- //Usingdrop-downlists
- importjava.awt.*;
- importjava.applet.*;
- publicclassChoice1extendsApplet{
- String[]description={"Ebullient","Obtuse",
- "Recalcitrant","Brilliant","Somnescent",
- "Timorous","Florid","Putrescent"};
- TextFieldt=newTextField(30);
- Choicec=newChoice();
- Buttonb=newButton("Additems");
- intcount=0;
- publicvoidinit(){
- t.setEditable(false);
- for(inti=0;i<4;i++)
- c.addItem(description[count++]);
- add(t);
- add(c);
- add(b);
- }
- publicbooleanaction(Eventevt,Objectarg){
- if(evt.target.equals(c))
- t.setText("index:"+c.getSelectedIndex()
- +""+(String)arg);
- elseif(evt.target.equals(b)){
- if(count<description.length)
- c.addItem(description[count++]);
- }
- else
- returnsuper.action(evt,arg);
- returntrue;
- }
- }///:~
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