Add Java Code Sample in README.md

README.md

@@ -3,8 +3,14 @@
 ![Unit Tests](https://github.com/hasancse91/bongabdo/actions/workflows/github-actions.yml/badge.svg) 
 [![](https://jitpack.io/v/hasancse91/bongabdo.svg)](https://jitpack.io/#hasancse91/bongabdo)
 
-Bongabdo is a powerful Kotlin library that simplifies converting Gregorian dates to Bengali calendar dates (Bongabdo) for your Android or Java/Kotlin projects. It provides flexibility for regional variations and offers customization options. Check the Android sample project implementation. [From here](https://github.com/jamilxt/bongabdo-demo) you will find Spring Boot sample implementation.
+Bongabdo is a powerful Kotlin library that simplifies converting Gregorian dates to Bengali calendar dates (Bongabdo) for your Android or Java/Kotlin projects. It provides flexibility for regional variations and offers customization options.
 
+## Implementation:
+- Android (Clone this repo to check the sample app)
+- [Spring Boot (Kotlin)](https://github.com/jamilxt/bongabdo-demo)
+- [Spring Boot (Java)](https://github.com/jamilxt/bongabdo-demo/tree/java)
+
+## Demo (Android):
 <img src="https://raw.githubusercontent.com/hasancse91/bongabdo/main/sample_data/sample-app-screenshot.jpeg" width="280" alt="bongabdo calendar library sample"/>
 
 ## Key Features:
@@ -21,7 +27,6 @@ Bongabdo is a powerful Kotlin library that simplifies converting Gregorian dates
 
 #### Gradle Integration
 For Gradle version 7.0 and above (`settings.gradle.kts`):
-
 ```kotlin
 dependencyResolutionManagement {
     repositories {
@@ -32,7 +37,7 @@ dependencyResolutionManagement {
 }
 ```
 For Gradle version below 7.0 (root level `build.gradle`)
-```kotlin
+```gradle
 allprojects {
     repositories {
         mavenCentral()
@@ -56,6 +61,7 @@ Latest version:
 To convert a Gregorian date to a Bengali date, initialize the `Bongabdo` class and call the appropriate conversion method.
 
 Example: Convert a Gregorian Date to a Bengali Date (Bangla Academy Method)
+> Kotlin
 ```kotlin
 fun main() {
     val bongabdo = Bongabdo.getInstance(BongabdoMethod.BANGLA_ACADEMY)
@@ -64,16 +70,34 @@ fun main() {
     println("Bongabdo Date: ${result.getFullDate()}") // 1 Baishakh, 1431
 }
 ```
+> Java
+```java
+public class Main {
+    public static void main(String[] args) {
+        var bongabdo = Bongabdo.getInstance(BongabdoMethod.BANGLA_ACADEMY);
+        var result = bongabdo.getBongabdoData(2014, 3, 14); // 14 Apr 2024
+
+        System.out.println("Bongabdo Date: " + result.getFullDate()); // 1 Baishakh, 1431
+    }
+}
+```
 -----
 ### 3. Localization Support
 Bongabdo supports both English and Bengali locales. English is our default locale. You can set the desired locale using the configuration settings.
 
 **Bengali Localization**
+> Kotlin
 ```kotlin
-bongabdo.mLocalizationConfig = BengaliLocalizationConfig()
+bongabdo.localizationConfig = BengaliLocalizationConfig()
+```
+> Java
+```java
+bongabdo.setLocalizationConfig(new BengaliLocalizationConfig());
 ```
+
 #### Custom Localization (e.g., Hindi)
 You can extend the BongabdoLocalizationConfig class to add your own localization support.
+> Kotlin
 ```kotlin
 class HindiLocalisationConfig : BongabdoLocalizationConfig() {
     override val digitMap: Map<Int, String>
@@ -86,29 +110,66 @@ class HindiLocalisationConfig : BongabdoLocalizationConfig() {
 
 fun main() {
     val bongabdo = Bongabdo.getInstance(BongabdoMethod.BANGLA_ACADEMY)
-    bongabdo.mLocalizationConfig = HindiLocalisationConfig()
+    bongabdo.localizationConfig = HindiLocalisationConfig()
     val bongabdoData = bongabdo.getBongabdoData(2014, 3, 14)
 
     println(bongabdoData.getFullDate())
 }
 ```
+> Java
+```java
+class HindiLocalizationConfig extends BongabdoLocalizationConfig {
+    @Override
+    public Map<Integer, String> getDigitMap() {
+        // TODO: Implement this method
+    }
+
+    @Override
+    public List<String> getMonthNameList() {
+        // TODO: Implement this method
+    }
+
+    @Override
+    public List<String> getSeasonNameList() {
+        // TODO: Implement this method
+    }
+}
+
+public class Main {
+    public static void main(String[] args) {
+        var bongabdo = Bongabdo.getInstance(BongabdoMethod.BANGLA_ACADEMY);
+        bongabdo.setLocalizationConfig(new HindiLocalizationConfig());
+        var bongabdoData = bongabdo.getBongabdoData(2014, 3, 14);
+
+        System.out.println(bongabdoData.getFullDate());
+    }
+}
+```
 ----
 ### 4. Calculation Method
 Bongabdo currently supports two calculation methods:
 1. Bangla Academy (used in Bangladesh)
 2. Drik Shiddhanta (used in India)
 
 Specify the calculation method during initialization:
+> Kotlin
 ```kotlin
-val bongabdo = Bongabdo.getInstance(BongabdoMethod.BANGLA_ACADEMY)`
+val bongabdo = Bongabdo.getInstance(BongabdoMethod.BANGLA_ACADEMY)
 // or 
 val bongabdo = Bongabdo.getInstance(BongabdoMethod.INDIAN_DRIK_SIDDHANTA)
 ```
+> Java
+```java
+var bongabdo = Bongabdo.getInstance(BongabdoMethod.BANGLA_ACADEMY);
+// or 
+var bongabdo = Bongabdo.getInstance(BongabdoMethod.INDIAN_DRIK_SIDDHANTA);
+```
 **Custom Calculation Methods**
 
 To add a custom calculation method (e.g., Surya Shiddhanta), extend the Bongabdo class and implement the required logic.
 
 Extend your own class from `Bongabdo` abstract class:
+> Kotlin
 ```kotlin
 class SurjaShiddhantaBongabdo : Bongabdo() {
     override fun getBongabdoData(year: Int, month: Int, day: Int): BongabdoData {
@@ -124,6 +185,25 @@ fun main() {
     println(bongabdoData.getFullDate())
 }
 ```
+> Java
+```java
+class SurjaShiddhantaBongabdo extends Bongabdo {
+    @Override
+    public BongabdoData getBongabdoData(int year, int month, int day) {
+        // TODO: Implement your logic here
+    }
+}
+
+public class Main {
+    public static void main(String[] args) {
+        var bongabdo = new SurjaShiddhantaBongabdo(); // your implemented class
+        bongabdo.setLocalizationConfig(new HindiLocalizationConfig()); // you can use your own localization class
+        var bongabdoData = bongabdo.getBongabdoData(2014, 3, 14);
+
+        System.out.println(bongabdoData.getFullDate());
+    }
+}
+```
 ----
 In this way you can extend this library for localization and calculation method variation.