Error in implementing menu items

Question

when i click menu item following error comes
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: javax.swing.JMenuItemtell me what is the problem how it can be short out
and the code is import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
public class a  implements ActionListener
{//static Button btn[];
static Button btn13;String str1,str2;
Random random=new Random();
Button b2=new Button();
Button b1=new Button();
int cp=0;int count=0;
static JFrame frm;
static int score;
static Button btn1;
static Button btn2;
static Button btn3;
static Button btn4;
static Button btn5;
static Button btn6;
static Button btn7;
static Button btn8;
static Button btn9;
static Button btn10;
static Button btn11;
static Button btn12;
static TextField txt2;
public static TextField txt1;
static  JMenuItem it[]=new JMenuItem[3];//creating array of refernce varaible
int l[]=new int[6];
int t[]=new int[6];
int k[]=new int[6];
static boolean g=true;
public static void main(String a[])
            //use constructor to create a frame and define button inside the frame amd make recursively call this constructor
            txt1 = new TextField(10);
            frm = new JFrame();
            frm.setLayout(new FlowLayout());
            btn1 = new Button("B");
            btn2 = new Button("B");
            btn3 = new Button("B");
            btn4 = new Button("B");
            btn5 = new Button("B");
            btn6 = new Button("B");
            btn7 = new Button("B");
            btn8 = new Button("B");
            btn9 = new Button("B");
            btn10 = new Button("B");
            btn11 = new Button("B");
            btn12 = new Button("B");
            frm.add(btn1);
            frm.add(btn2);
            frm.add(btn3);
            frm.add(btn4);
            frm.add(btn5);
            frm.add(btn6);
            frm.add(btn7);
            frm.add(btn8);
            frm.add(btn9);
            frm.add(btn10);
            frm.add(btn11);
            frm.add(btn12);
           frm.add(new JLabel("score"));
            frm.add(txt1);
            frm.add(new JLabel("time"));
            frm.add( txt2=new TextField());
            txt1.setEditable(false);
            btn13 = new Button("start");
            frm.add(btn13);
            JMenuBar bar = new JMenuBar();
            JMenu option = new JMenu("options");
            it[0] = new JMenuItem("start");
            it[1] = new JMenuItem("restart");
            it[2] = new JMenuItem("author");
            for (int pl = 0; pl < 3; pl++) {
                option.add(it[pl]);
            bar.add(option);
            a p = new a();
            it[0].addActionListener(p);
            it[1].addActionListener(p);
            it[2].addActionListener(p);
            btn1.addActionListener(p);
            btn2.addActionListener(p);
            btn3.addActionListener(p);
            btn4.addActionListener(p);
            btn5.addActionListener(p);
            btn6.addActionListener(p);
            btn7.addActionListener(p);
            btn8.addActionListener(p);
            btn9.addActionListener(p);
            btn10.addActionListener(p);
            btn11.addActionListener(p);
            btn12.addActionListener(p);
            btn13.addActionListener(p);
            frm.setTitle("BHAVISHYA");
            frm.setJMenuBar(bar);
            frm.setVisible(true);
            frm.setSize(200, 225);
            frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            for (int l = 1; l > 0; l++) {
              if(g)  {
                txt2.setText(String.valueOf(l));
           try{Thread.sleep(1000);}
           catch(Exception e){}
continues.....

Answer 1

public void actionPerformed(ActionEvent e)
{ArrayList h= new ArrayList();
h.add("a");h.add("b");h.add("c");h.add("d");h.add("e");h.add("f");h.add("g");h.add("h");h.add("i");h.add("j");h.add("k");h.add("l");h.add("m");h.add("n");
h.add("o");h.add("p");h.add("q");h.add("r");h.add("s");h.add("t");h.add("u");h.add("v");h.add("w");h.add("x");h.add("y");h.add("z");
Button src=(Button)e.getSource();
String str=e.getActionCommand();
if(src==btn1)
{btn1.setLabel(String.valueOf(h.get(l[0])));
count++;
getResult(count,btn1);}
if(src==btn2)
{btn2.setLabel(String.valueOf(h.get(l[1])));
count++;
getResult(count,btn2);}
if(src==btn3)
{btn3.setLabel(String.valueOf(h.get(l[2])));
count++;
getResult(count,btn3);}
if(src==btn4)
{btn4.setLabel(String.valueOf(h.get(l[3])));
count++;
getResult(count,btn4);}
if(src==btn5)
{btn5.setLabel(String.valueOf(h.get(l[4])));
count++;
getResult(count,btn5);}
if(src==btn6)
{btn6.setLabel(String.valueOf(h.get(l[5])));
count++;
getResult(count,btn6);}
if(src==btn7)
{btn7.setLabel(String.valueOf(h.get(k[0])));
count++;
getResult(count,btn7);}
if(src==btn8)
{btn8.setLabel(String.valueOf(h.get(k[1])));
count++;
getResult(count,btn8);}
if(src==btn9)
{btn9.setLabel(String.valueOf(h.get(k[2])));
count++;
getResult(count,btn9);}
if(src==btn10)
{btn10.setLabel(String.valueOf(h.get(k[3])));
count++;
getResult(count,btn10);}
if(src==btn11)
{btn11.setLabel(String.valueOf(h.get(k[4])));
count++;
getResult(count,btn11);}
if(src==btn12)
{btn12.setLabel(String.valueOf(h.get(k[5])));
count++;
getResult(count,btn12);}
if(src==btn13)
calla();}
if(str.equals("start"))
{calla();}
if(str.equals("restart"))
{//restart();
if(str.equals("author")){
JOptionPane.showMessageDialog(frm,"BHAVISHYA GOYAL");
/**public String valueAta(int c,int s,int t)
{switch (s)      //used to work programme in three different stage ,pass three value from the beging and maintain stage variable
{  case 1: return(String.valueOf(h.get(l[c])))
            break;
     case 2:{ if(t==1)
         return(String.valueOf(h.get(l[c]+25)))
     else   
         return(String.valueOf(h.get(l[c]+50)))}
            break;
     case 3:{if(t==1)
         return(String.valueOf(h.get(l[c]+75)))
     else   
         return(String.valueOf(h.get(l[c]+100)))}
            break;
public void calla()
l=random();
k=randoma(l);                            //call the random function
int[] random()
{int nums[] =new int[6];
for (int i = 0; i < nums.length; i++) {
int num = getNumber(nums);
            nums[i] = num;
return nums;}
int[] randoma(int p[])
{//int t[]=new int[6];
ArrayList al=new ArrayList();
int numsa[] =new int[6];
for (int i = 0; i < numsa.length; i++) {
al.add(p);
//int numa = getNumbera(numsa);
// numsa[i] = numa;
// t[i]=p[numa];//if we want to choose 6 number there are 6 no but choose them randomly and all the 6 no should be included
Collections.shuffle(al);
Object [] pl=al.toArray();
for(int i=0; i<pl.length; i++)
{t[i]= ((Integer) pl[i]);
}return t;
private int getNumber(int[] array) {
int n;
do {
n = random.nextInt(25);
} while(contains(array, n));
return n;
private int getNumbera(int[] array) {
int n;
do {
n = random.nextInt(6);
} while(contains(array, n));
return n;
private static boolean contains(int array[], int n) {
for(int i = 0; i < array.length; i++)
if(array[i] == n)
return true;
return false;
void getResult(int p,Button b)
{if(p==2)
{ b2=b;
str2=b.getLabel();
//remove the button from the screen
if(str1.equals(str2)&!(b1==b2))
{b1.setLabel("R");
b2.setLabel("R");
frm.remove(b1);
frm.remove(b2);
score=score+10;
//frm.validate();
++cp;
if(cp==6)
{//define the function of creating frame in construtor so u can recursively call this function todefine the new frame
//btn13.setLabel("win");
g=false;
JOptionPane.showMessageDialog(frm,"you hit the goal score is"+String.valueOf(score)+"time is"+txt2.getText()+"sec");
calla();
//frm.removeAll();
//frm.validate();
else
try{Thread.sleep(1000);b1.setLabel("B");
b2.setLabel("B");//here makes the delay function
score=score-5;}
catch(Exception e)
{System.out.println(e);}}
count=0;}
else
{ b1=b;str1=b.getLabel();}
txt1.setText(String.valueOf(score));