How we use OnClickListener and simple Toast in android Studio

 package com.example.practice_section;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
    Button button2,button3; // here we define the id
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        getSupportActionBar().hide();
        button2=findViewById(R.id.button2); //here we find the button by id
        button3=findViewById(R.id.button3);
        button2.setOnClickListener(new View.OnClickListener() { //this is the method of writing oncclicklistener
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "You have been Sign Up", Toast.LENGTH_SHORT).show(); //this is the method of writing toast
            }
        });
        button3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "You have been sign In", Toast.LENGTH_SHORT).show();
            }
        });
        
    }
}