package com.example; import androidx.appcompat.app.AppCompatActivity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.Button; public class MainActivity extends AppCompatActivity { Button student,teacher; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); student = (Button) findViewById(R.id.student_button); teacher = (Button) findViewById(R.id.teacher_button); choose(); } private void choose(){ student.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Intent intent = new Intent(MainActivity.this,StudentLogin.class); startActivity(intent); } }); teacher.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Intent intent = new Intent(MainActivity.this, TeacherLogin.class); startActivity(intent); } }); } }