BAEL-3835: Inject a value to a static field (#8820)

Co-authored-by: Georgios Charitakis <georgios.charitakis@prodyna.com>

spring-core-3/static-value-injection/README.md

@@ -0,0 +1,22 @@
+# Inject a value to a static field
+
+## How to run
+```sh
+mvn clean install
+mvn spring-boot:run
+```
+
+## Request
+
+**GET**
+http://localhost:8080/properties
+
+
+## Response
+```json
+[
+    "Inject a value to a static field",
+    "Inject a value to a static field",
+    null
+]
+```

spring-core-3/static-value-injection/pom.xml

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.2.4.RELEASE</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>com.baeldung</groupId>
+	<artifactId>static.value.injection</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>static.value.injection</name>
+	<description>Demo project for Spring Boot</description>
+
+	<properties>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+			<exclusions>
+				<exclusion>
+					<groupId>org.junit.vintage</groupId>
+					<artifactId>junit-vintage-engine</artifactId>
+				</exclusion>
+			</exclusions>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

spring-core-3/static-value-injection/src/main/java/com/baeldung/Application.java

@@ -0,0 +1,13 @@
+package com.baeldung;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+	public static void main(String[] args) {
+		SpringApplication.run(Application.class, args);
+	}
+
+}

spring-core-3/static-value-injection/src/main/java/com/baeldung/controller/PropertyController.java

@@ -0,0 +1,31 @@
+package com.baeldung.controller;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Arrays;
+import java.util.List;
+
+@RestController
+public class PropertyController {
+
+    @Value("${name}")
+    private String name;
+
+    @Value("${name}")
+    private static String NAME_NULL;
+
+    private static String NAME_STATIC;
+
+    @Value("${name}")
+    public void setNameStatic(String name){
+        PropertyController.NAME_STATIC = name;
+    }
+
+    @GetMapping("/properties")
+    public List<String> getProperties(){
+        return Arrays.asList(this.name, NAME_STATIC, NAME_NULL)  ;
+    }
+}

spring-core-3/static-value-injection/src/main/resources/application.properties

@@ -0,0 +1 @@
+name = Inject a value to a static field

spring-core-3/static-value-injection/src/test/java/com/baeldung/ApplicationTests.java

@@ -0,0 +1,13 @@
+package com.baeldung;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class ApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}