Program to check the items listed using Checkbox |Android program|

activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:orientation="vertical">

    <Checkbox
        android:id="@+id/android"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Android" />

    <Checkbox
        android:id="@+id/java"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Java" />

    <Checkbox
        android:id="@+id/python"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Python" />

    <Checkbox
        android:id="@+id/symbian"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Symbian" />

    <Button
        android:id="@+id/Clickhere"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="click here" />

</LinearLayout>

MainActivity.java

package com.example.checkbox;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private CheckBox android,java,python,symbian;
    private Button Clickhere;

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        android=findViewById(R.id.android);
        java=findViewById(R.id.java);
        python=findViewById(R.id.python);
        symbian=findViewById(R.id.symbian);
        Clickhere=findViewById(R.id.Clickhere);

        Clickhere.setOnClickListener(new View.OnClickListener() {
            @Override            public void onClick(View v) {
                StringBuffer OUTPUT=new StringBuffer();
                OUTPUT.append("Android:").append(android.isChecked());
                OUTPUT.append("\nJava:").append(java.isChecked());
                OUTPUT.append("\nPython:").append(python.isChecked());
                OUTPUT.append("\nSymbian:").append(symbian.isChecked());

                Toast.makeText(MainActivity.this,OUTPUT.toString(),Toast.LENGTH_LONG).show();
            }
        });
    }
}


Design