java - Load class into frame after button clicked -


sorry bother i'm stuck 3 days problem. need load class initial frame after clicking start button. problem never can done. guess problem in actionlistener method.... can solve it. school project, , teacher doesn't let use swing or jcomponent. can give me little help?

the code of first frame is

import java.applet.*; import java.awt.*; import java.awt.event.*;  public class frame extends applet {  private button v; private button f; private image lo; pergun per = new pergun(); pergun p;  public void init() {      setsize(400, 550);     font myfont = new font("arial", font.bold, 25);     v = new button("iniciar");     v.setfont(myfont);     v.setbounds((400 / 2) - 35, (550 / 2) - 10, 100, 30);     setlayout(null);     add(v);     v.addactionlistener(new exit());     f = new button("fechar");     f.setvisible(true);     f.setbounds(10, 500, 60, 30);     f.addactionlistener(new ex());     add(f); }  public void start() {     p = new pergun();     thread funcao = new thread();     funcao.start(); }  public void paint(graphics g) {     g.setcolor(color.blue);     g.fillrect(0, 0, 400, 550); }  class exit implements actionlistener {     public void actionperformed(actionevent e) {         if (v instanceof button) {             per.start();             per.setvisible(true);         }     } }  class ex implements actionlistener {     public void actionperformed(actionevent e) {         if (f instanceof button) {             system.exit(0);         }     } } }

the second class want load first frame this

import java.applet.*; import java.awt.*;   public class pergun extends applet   {    public void update(){ }  public  void init () {      setbackground(color.red);     label i, ii, iii;     = new label("indique o número de lâmpadas.");     ii = new label("têm todas da mesma potência?");     iii = new label("indique potência:");     i.setbounds(10, 10, 200, 20);     ii.setbounds(10, 50, 200, 20);     iii.setbounds(10, 100, 200, 20);     setlayout(null);     add(i);     add(ii);     add(iii);      checkbox w15, w25, w40, w60, w75, w100, w150, wout;     w15 = new checkbox("15w");     w25 = new checkbox("25w");     w40 = new checkbox("40w");     w60 = new checkbox("60w");     w75 = new checkbox("75w");     w100 = new checkbox("100w");     w150 = new checkbox("150w");     wout = new checkbox("outra?");     w15.setbounds(20, 120, 50, 50);     w25.setbounds(70, 120, 50, 50);     w40.setbounds(120, 120, 50, 50);     w60.setbounds(170, 120, 50, 50);     w75.setbounds(220, 120, 50, 50);     w100.setbounds(270, 120, 50, 50);     w150.setbounds(320, 120, 50, 50);     wout.setbounds(20, 155, 55, 50);     add(w15);     add(w25);     add(w40);     add(w60);     add(w75);     add(w100);     add(w150);     add(wout);      textfield num;     num = new textfield();      num.setbounds(250, 10, 100, 20);     add(num);      choice sn;     sn = new choice();     sn.additem("");     sn.additem("sim");     sn.additem("não");     sn.setbounds(250, 50, 100, 20);     add(sn);     sn.getbackground();  } public void paint(graphics g) {     setsize(400, 550);     g.setcolor(color.red);     g.fillrect(0, 0, 400, 550); }  }

thanks time.


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