How to Work with Check Boxes In Android Studio Perform Actions on Check Box Click

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CheckBox | Android Studio | Java

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"
    android:orientation="vertical"
    android:padding="10dp"
    tools:context=".MainActivity">


    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Select Your Experiences:"
        android:textColor="#000"
        android:textStyle="bold" />

    <CheckBox
        android:id="@+id/androidCb"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:checked="false"
        android:text="Android Developer" />

    <CheckBox
        android:id="@+id/iosCb"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:checked="false"
        android:text="iOS Developer" />

    <CheckBox
        android:id="@+id/graphicsCb"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:checked="false"
        android:text="Graphics Designer" />

    <Button
        android:id="@+id/confirmBtn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Confirm" />

    <TextView
        android:id="@+id/resultTv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />


</LinearLayout>

MainActivity.java

package com.usmtip.myapplication;


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

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {


    //declare views
    private CheckBox androidCb, iosCb, graphicsCb;
    private Button confirmBtn;
    private TextView resultTv;




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

        //init checkbox
        androidCb = findViewById(R.id.androidCb);
        iosCb = findViewById(R.id.iosCb);
        graphicsCb = findViewById(R.id.graphicsCb);
        confirmBtn = findViewById(R.id.confirmBtn);
        resultTv = findViewById(R.id.resultTv);

        confirmBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                StringBuilder result = new StringBuilder();
                if (androidCb.isChecked()) {
                    result.append("\n\nAndroid Developer");
                }
                if (iosCb.isChecked()) {
                    result.append("\n\niOS Developer");
                }
                if (graphicsCb.isChecked()) {
                    result.append("\n\nGraphics Designer");
                }
                resultTv.setText("You're have selected:\n\n" + result);
            }
        });

    }
}