//heres my code
//can anyone help me
//it has an error

import javax.swing.*; //components
import java.awt.*;//layout manager
import javax.swing.JButton.*;
public class Keyboard extends JFrame{
public static void main(String args[]){
new Keyboard(); // simply call the constructor
}
public Keyboard(){
setVisible(true);
setSize(1100,400);
setTitle("Keyboard");

JButton btnesc= new JButton("Esc");
JButton btnf1= new JButton("F1");
JButton btnf2= new JButton("F2");
JButton btnf3= new JButton("F3");
JButton btnf4= new JButton("F4");
JButton btnf5= new JButton("F5");
JButton btnf6= new JButton("F6");
JButton btnf7= new JButton("F7");
JButton btnf8= new JButton("F8");
JButton btnf9= new JButton("F9");
JButton btnf10= new JButton("F10");
JButton btnf11= new JButton("F11");
JButton btnf12= new JButton("F12");
JButton btnpause= new JButton("Pause");
JButton btnprt= new JButton("PRT SC");
JButton btndelete= new JButton("Delete");
JButton btninsert= new JButton("Insert");
JButton btnaccent= new JButton(" ` ");
JButton btn1= new JButton(" 1 ");
JButton btn2= new JButton(" 2 ");
JButton btn3= new JButton(" 3 ");
JButton btn4= new JButton(" 4 ");
JButton btn5= new JButton(" 5 ");
JButton btn6= new JButton(" 6 ");
JButton btn7= new JButton(" 7 ");
JButton btn8= new JButton(" 8 ");
JButton btn9= new JButton(" 9 ");
JButton btn0= new JButton(" 0 ");
JButton btnminus= new JButton(" - ");
JButton btnequal= new JButton(" = ");
JButton btnbackspace= new JButton(" BackSpace ");
JButton btnhome= new JButton(" Home ");
JButton btntab= new JButton(" Tab ");
JButton btnq= new JButton(" Q ");
JButton btnw= new JButton(" W ");
JButton btne= new JButton(" E ");
JButton btnr= new JButton(" R ");
JButton btnt= new JButton(" T ");
JButton btny= new JButton(" Y ");
JButton btnu= new JButton(" U ");
JButton btni= new JButton(" I ");
JButton btno= new JButton(" O ");
JButton btnp= new JButton(" P ");
JButton btnbracket= new JButton(" [ ");
JButton btnbracket2= new JButton(" ] ");
JButton btnbackslash= new JButton(" | ");
JButton btnpgup= new JButton(" PGUP ");
JButton btncaps= new JButton(" Caps Lock ");
JButton btna= new JButton(" A ");
btna.setPreferredSize(5,5);
JButton btns= new JButton(" S ");
JButton btnd= new JButton(" D ");
JButton btnf= new JButton(" F ");
JButton btng= new JButton(" G ");
JButton btnh= new JButton(" H ");
JButton btnj= new JButton(" J ");
JButton btnk= new JButton(" K ");
JButton btnl= new JButton(" L ");
JButton btnsemi= new JButton(" ; ");
JButton btnapo= new JButton(" ' ");
JButton btnenter= new JButton(" Enter ");
JButton btnpgdn= new JButton("PGDN");
JButton btnshift= new JButton(" Shift ");
JButton btnshift2= new JButton(" Shift ");
JButton btnz= new JButton(" Z ");
JButton btnx= new JButton(" X ");
JButton btnc= new JButton(" C ");
JButton btnv= new JButton(" V ");
JButton btnb= new JButton(" B ");
JButton btnn= new JButton(" N ");
JButton btnm= new JButton(" M ");
JButton btncomma= new JButton(",");
JButton btnperiod= new JButton(".");
JButton btnslash= new JButton("/");
JButton btnctrl= new JButton(" CTRL ");
JButton btnwin= new JButton(" Windows ");
JButton btnspace= new JButton(" ");
JButton btnalt= new JButton(" Alt ");
JButton btnalt2= new JButton(" Alt ");
JButton btnewan= new JButton(" [] ");
JButton btnfn= new JButton(" fn ");
JButton btnctrl2= new JButton(" CTRL ");
JButton btnup= new JButton("^");
JButton btnend= new JButton("End");
JButton btnleft= new JButton("<");
JButton btnright= new JButton(">");
JButton btndown= new JButton("v");

JPanel main=new JPanel();
main.setLayout(new GridLayout(4,1));

JPanel A=new JPanel();
A.setLayout(new GridLayout(2,1));

JPanel A1=new JPanel();
A1.setLayout(new FlowLayout());

A1.add(btnesc);
A1.add(btnf1);
A1.add(btnf2);
A1.add(btnf3);
A1.add(btnf4);
A1.add(btnf5);
A1.add(btnf6);
A1.add(btnf7);
A1.add(btnf8);
A1.add(btnf9);
A1.add(btnf10);
A1.add(btnf11);
A1.add(btnf12);
A1.add(btnpause);
A1.add(btnprt);
A1.add(btninsert);
A1.add(btndelete);
A.add(A1);

JPanel A2= new JPanel();
A2.setLayout(new FlowLayout());

JPanel A2c= new JPanel();
A2c.setLayout(new FlowLayout());

A2c.add(btnaccent);
A2.add(A2c);
A.add(A2);

JPanel A2d= new JPanel();
A2d.setLayout(new FlowLayout());

A2d.add(btn1);
A2.add(A2d);
A.add(A2);

JPanel A2e= new JPanel();
A2e.setLayout(new FlowLayout());

A2e.add(btn2);
A2.add(A2e);
A.add(A2);

JPanel A2p= new JPanel();
A2p.setLayout(new FlowLayout());

A2p.add(btn3);
A2.add(A2p);
A.add(A2);

JPanel A2f= new JPanel();
A2f.setLayout(new FlowLayout());

A2f.add(btn4);
A2.add(A2f);
A.add(A2);

JPanel A2g= new JPanel();
A2g.setLayout(new FlowLayout());

A2g.add(btn5);
A2.add(A2g);
A.add(A2);

JPanel A2h= new JPanel();
A2h.setLayout(new FlowLayout());

A2h.add(btn6);
A2.add(A2h);
A.add(A2);

JPanel A2i= new JPanel();
A2i.setLayout(new FlowLayout());

A2i.add(btn7);
A2.add(A2i);
A.add(A2);

JPanel A2j= new JPanel();
A2j.setLayout(new FlowLayout());

A2j.add(btn8);
A2.add(A2j);
A.add(A2);

JPanel A2k= new JPanel();
A2k.setLayout(new FlowLayout());

A2k.add(btn9);
A2.add(A2k);
A.add(A2);

JPanel A2o= new JPanel();
A2o.setLayout(new FlowLayout());

A2o.add(btn0);
A2.add(A2o);
A.add(A2);

JPanel A2m= new JPanel();
A2m.setLayout(new FlowLayout());

A2m.add(btnminus);
A2.add(A2m);
A.add(A2);

JPanel A2n= new JPanel();
A2n.setLayout(new FlowLayout());

A2n.add(btnequal);
A2.add(A2n);
A.add(A2);

JPanel A2l= new JPanel();
A2l.setLayout(new FlowLayout());

A2l.add(btnbackspace);
A2.add(A2l);
A.add(A2);

JPanel A2b= new JPanel();
A2b.setLayout(new FlowLayout());

A2b.add(btnhome);
A2.add(A2b);
A.add(A2);

main.add(A);

JPanel B= new JPanel();
B.setLayout(new GridLayout(2,1));

JPanel B1= new JPanel();
B1.setLayout(new FlowLayout());

JPanel B1a= new JPanel();
B1a.setLayout(new FlowLayout());

B1a.add(btntab);
B1.add(B1a);
B.add(B1);

JPanel B1b= new JPanel();
B1b.setLayout(new FlowLayout());

B1b.add(btnq);
B1.add(B1b);
B.add(B1);

JPanel B1c= new JPanel();
B1c.setLayout(new FlowLayout());

B1c.add(btnw);
B1.add(B1c);
B.add(B1);

JPanel B1d= new JPanel();
B1d.setLayout(new FlowLayout());

B1d.add(btne);
B1.add(B1d);
B.add(B1);

JPanel B1e= new JPanel();
B1e.setLayout(new FlowLayout());

B1e.add(btnr);
B1.add(B1e);
B.add(B1);

JPanel B1f= new JPanel();
B1f.setLayout(new FlowLayout());

B1f.add(btnt);
B1.add(B1f);
B.add(B1);

JPanel B1g= new JPanel();
B1g.setLayout(new FlowLayout());

B1g.add(btny);
B1.add(B1g);
B.add(B1);

JPanel B1h= new JPanel();
B1h.setLayout(new FlowLayout());

B1h.add(btnu);
B1.add(B1h);
B.add(B1);

JPanel B1i= new JPanel();
B1i.setLayout(new FlowLayout());

B1i.add(btni);
B1.add(B1i);
B.add(B1);

JPanel B1j= new JPanel();
B1j.setLayout(new FlowLayout());

B1j.add(btno);
B1.add(B1j);
B.add(B1);

JPanel B1k= new JPanel();
B1k.setLayout(new FlowLayout());

B1k.add(btnp);
B1.add(B1k);
B.add(B1);

JPanel B1l= new JPanel();
B1l.setLayout(new FlowLayout());

B1l.add(btnbracket);
B1.add(B1l);
B.add(B1);

JPanel B1m= new JPanel();
B1m.setLayout(new FlowLayout());

B1m.add(btnbracket2);
B1.add(B1m);
B.add(B1);

JPanel B1n= new JPanel();
B1n.setLayout(new FlowLayout());

B1n.add(btnbackslash);
B1.add(B1n);
B.add(B1);

JPanel B1o= new JPanel();
B1o.setLayout(new FlowLayout());

B1o.add(btnpgup);
B1.add(B1o);
B.add(B1);

B.add(B1);

JPanel B2= new JPanel();
B2.setLayout(new FlowLayout());

B2.add(btncaps);
B2.add(btna);
B2.add(btns);
B2.add(btnd);
B2.add(btnf);
B2.add(btng);
B2.add(btnh);
B2.add(btnj);
B2.add(btnk);
B2.add(btnl);
B2.add(btnsemi);
B2.add(btnapo);
B2.add(btnenter);
B2.add(btnpgdn);
B.add(B2);

main.add(B);

JPanel C= new JPanel();
C.setLayout(new FlowLayout());

JPanel C1= new JPanel();
C1.setLayout(new FlowLayout());

JPanel C1o= new JPanel();
C1o.setLayout(new GridLayout(2,1));

JPanel C1A = new JPanel();
C1A.setLayout(new GridLayout(0,1));
C1A.add(btnshift);
C1o.add(C1A);

JPanel C1q= new JPanel();
C1q.setLayout(new GridLayout(1,2));

JPanel C1B = new JPanel();
C1B.setLayout(new GridLayout(1,0));
C1B.add(btnctrl);
C1q.add(C1B);
C1o.add(C1q);

JPanel C1p = new JPanel();
C1p.setLayout(new GridLayout());
C1p.add(btnfn);
C1q.add(C1p);
C1o.add(C1q);
C1.add(C1o);

JPanel C1c= new JPanel();
C1c.setLayout(new GridLayout(2,2));

C1c.add(btnz);
C1c.add(btnx);
C1c.add(btnwin);
C1c.add(btnalt);
C1.add(C1c);

JPanel C1d=new JPanel();
C1d.setLayout(new GridLayout(2,1));

JPanel C1e=new JPanel();
C1e.setLayout(new GridLayout(1,5));

C1e.add(btnc);
C1e.add(btnv);
C1e.add(btnb);
C1e.add(btnn);
C1e.add(btnm);
C1.add(C1e);

JPanel C1f=new JPanel();
C1f.setLayout(new GridLayout(1,1));

C1f.add(btnspace);
C1.add(C1f);
C1.add(C1d);

JPanel C1g=new JPanel();
C1g.setLayout(new GridLayout(2,2));

C1g.add(btncomma);
C1g.add(btnperiod);
C1g.add(btnalt2);
C1g.add(btnewan);
C1.add(C1g);

JPanel C1h=new JPanel();
C1h.setLayout(new GridLayout(2,2));

JPanel C1i=new JPanel();
C1i.setLayout(new FlowLayout());

C1i.add(btnslash);
C1i.add(btnshift2);
C1h.add(C1i);

JPanel C1j=new JPanel();
C1j.setLayout(new FlowLayout());

C1j.add(btnctrl2);
C1j.add(btnleft);
C1h.add(C1j);

C1.add(C1h);

JPanel C1k=new JPanel();
C1k.setLayout(new GridLayout(2,2));

C1k.add(btnup);
C1k.add(btnend);
C1k.add(btndown);
C1k.add(btnright);
C1.add(C1k);

C.add(C1);

main.add(C);

add(main);

}

}