@@ -0,0 +1,1422 @@
+package com.example.my.androidprojectnetcamp;%0A%0Aimport android.content.Intent;%0Aimport android.support.v7.app.AppCompatActivity;%0Aimport android.os.Bundle;%0Aimport android.view.View;%0Aimport android.widget.Button;%0A%0Apublic class Fourth extends AppCompatActivity %7B%0A    Button b1,b2,b3;%0A%0A    @Override%0A    protected void onCreate(Bundle savedInstanceState) %7B%0A        super.onCreate(savedInstanceState);%0A        setContentView(R.layout.activity_third);%0A        b1=(Button)findViewById(R.id.button10);%0A        b2=(Button)findViewById(R.id.button11);%0A        b3=(Button)findViewById(R.id.button12);%0A        b1.setOnClickListener(new View.OnClickListener() %7B%0A            @Override%0A            public void onClick(View view) %7B%0A                Intent i= new Intent(Fourth.this,MainActivity.class);%0A                startActivity(i);%0A%0A            %7D%0A        %7D);%0A        b2.setOnClickListener(new View.OnClickListener() %7B%0A            @Override%0A            public void onClick(View view) %7B%0A                Intent j= new Intent(Fourth.this,MainActivity.class/*ENter Quiz class here*/);%0A                startActivity(j);%0A%0A            %7D%0A        %7D);%0A        b3.setOnClickListener(new View.OnClickListener() %7B%0A            @Override%0A            public void onClick(View view) %7B%0A                Intent k= new Intent(Fourth.this,MainActivity.class/*Magical music player class*/);%0A                startActivity(k);%0A%0A            %7D%0A        %7D);%0A    %7D%0A%7D%0A

Create Fourth.java