error: class,interface, or Enum expected?

Question

So guys were here trying to do an exercise of old game in android studio and I can not find where is the error, I would like some help.

 package com.example.francisco.jogodavelha;

 import android.app.AlertDialog; import
 android.content.DialogInterface; import
 android.support.v7.app.AppCompatActivity; import android.os.Bundle;
 import android.view.Menu; import android.view.MenuItem; import
 android.view.View; import android.widget.Button; import
 android.widget.Toast;

 public class MainActivity extends AppCompatActivity {

     public final int BOLA = 1;
     public final int CRUZ = 2;

     int turno;
     int rodada;

     public void VerificarFim() {
         int vencedor = 0;
         if (bot[0].getValor() == bot[1].getValor() && bot[1].getValor() == bot[2].getValor()) {
             vencedor = bot[0].getValor();
         } else if (bot[3].getValor() == bot[4].getValor() && bot[4].getValor() == bot[5].getValor()) {
             vencedor = bot[3].getValor();
         } else if (bot[6].getValor() == bot[7].getValor() && bot[7].getValor() == bot[8].getValor()) {
             vencedor = bot[6].getValor();
         } else if (bot[0].getValor() == bot[3].getValor() && bot[3].getValor() == bot[6].getValor()) {
             vencedor = bot[0].getValor();
         } else if (bot[1].getValor() == bot[4].getValor() && bot[4].getValor() == bot[7].getValor()) {
             vencedor = bot[1].getValor();
         } else if (bot[2].getValor() == bot[4].getValor() && bot[4].getValor() == bot[8].getValor()) {
             vencedor = bot[2].getValor();
         } else if (bot[0].getValor() == bot[4].getValor() && bot[1].getValor() == bot[2].getValor()) {
             vencedor = bot[0].getValor();
         } else if (bot[2].getValor() == bot[4].getValor() && bot[4].getValor() == bot[6].getValor()) {
             vencedor = bot[2].getValor();
         }
         if (rodada > 9 && vencedor == 0) {
             vencedor = -1;
         }
         if (vencedor != 0) {
             String textovit = "";
             if (vencedor == BOLA) {
                 textovit = "Bola Venceu, ";
             } else if (vencedor == CRUZ) {
                 textovit = "Cruz Venceu, ";
             } else {
                 textovit = "Houve um empate";
             }
             textovit += "Deseja jogar novamente?";
         }

         AlertDialog.Buider buider = new AlertDialog.Builder(MainActivity.this);

         builder.setTitle("Fim de jogo");
         buider.setMessage(textovit);
         builder.setCancelable(false);

         buider.setPositiveButton("Jogar", new DialogInterface.OnClickListener() {
             public void onClick(DialogInterface dialog, int which) {
                 for (int i = 0; i<9; i++){
                     bot[i].getBot().setEnabled(true);
                     bot[i].getBot().setText("");
                     bot[i].setValor(0);
                 }
             }
         });
         builder.setNegativeButton("sair", new DialogInterface.OnClickListener(){
             public void onClick (DialogInterface dialog,int which){
                 finish();
             }
         });

         AlertDialog alert = builder.create();
         alert.show();
     } 
}

 class Botao {
     private Button bot;
     private int valor;

     public void setValor(int valor) {
         this.valor = valor;
     }

     public Button getBot() {
         return this.bot;
     }

     public int getValor() {
         return this.valor;
     }

     public Botao(Button bot) {
         this.bot = bot;
         this.valor = 0;
         this.bot.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 getBot().setEnabled(false);
                 setValor(turno);
                 if (turno == BOLA) {
                     getBot().setText("0");
                     turno = CRUZ;
                 } else {
                     getBot().setText("X");
                     turno = BOLA;
                 }
                 rodada++;
                 VerificarFim();
             }

         });
     }
 }
     Botao[] bot;

     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         turno = BOLA;
         rodada = 1;
         bot = new Botao[9];
         bot[0] = new Botao ( (Button) findViewById(R.id.bot1));
         bot[1] = new Botao ( (Button) findViewById(R.id.bot2));
         bot[2] = new Botao ( (Button) findViewById(R.id.bot3));
         bot[3] = new Botao ( (Button) findViewById(R.id.bot4));
         bot[4] = new Botao ( (Button) findViewById(R.id.bot5));
         bot[5] = new Botao ( (Button) findViewById(R.id.bot6));
         bot[6] = new Botao ( (Button) findViewById(R.id.bot7));
         bot[7] = new Botao ( (Button) findViewById(R.id.bot8));
         bot[8] = new Botao ( (Button) findViewById(R.id.bot9));

     }
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         // Inflate the menu; this adds items to the action bar if it is present.
         getMenuInflater().inflate(R.menu.menu_main, menu);
         return true;
     }
 }

Answer 1

If your MainActivity is exactly the way you posted in your question, your problem is at the end of your class.

That part of the code (below) probably belongs to your MainActivity and at this point is nowhere because it has a key lock (}) wrong somewhere.

 Botao[] bot;

 @Override
 public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_main);
     turno = BOLA;
     rodada = 1;
     bot = new Botao[9];
     bot[0] = new Botao ( (Button) findViewById(R.id.bot1));
     bot[1] = new Botao ( (Button) findViewById(R.id.bot2));
     bot[2] = new Botao ( (Button) findViewById(R.id.bot3));
     bot[3] = new Botao ( (Button) findViewById(R.id.bot4));
     bot[4] = new Botao ( (Button) findViewById(R.id.bot5));
     bot[5] = new Botao ( (Button) findViewById(R.id.bot6));
     bot[6] = new Botao ( (Button) findViewById(R.id.bot7));
     bot[7] = new Botao ( (Button) findViewById(R.id.bot8));
     bot[8] = new Botao ( (Button) findViewById(R.id.bot9));

 }
 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
     // Inflate the menu; this adds items to the action bar if it is present.
     getMenuInflater().inflate(R.menu.menu_main, menu);
     return true;
 }
}

If your class Botao for a innerClass, you must remove the lock keys } just before the line class Botao { if it is an external class to its MainActivity you must take the code above and put before the lock keys before the class Botao