Add google checkstyle (#1)

* google checkstyle

* Formatted with Google Java Formatter

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

Author: realDuYuanChao

.github/workflows/checkstyle.yml

@@ -0,0 +1,24 @@
+name: Code Formatter
+
+on: [push, pull_request]
+
+jobs:
+  checkstyle:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+      - name: Set up JDK 12
+        uses: actions/setup-java@v1
+        with:
+          java-version: 12
+      - run: wget https://github.com/google/google-java-format/releases/download/google-java-format-1.9/google-java-format-1.9-all-deps.jar -O formatter.jar
+      - run: java -jar formatter.jar --replace --set-exit-if-changed $(find . -type f -name "*.java" | grep ".*/src/.*java")
+      - name: Commit Format changes
+        if: failure()
+        run: |
+          git config --global user.name github-actions
+          git config --global user.email '${GITHUB_ACTOR}@users.noreply.github.com'
+          git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/$GITHUB_REPOSITORY
+          git commit -am "Formatted with Google Java Formatter"
+          git push --force origin HEAD:$GITHUB_REF

consuming-rest/src/main/java/com/example/consumingrest/ConsumingRestApplication.java

@@ -12,23 +12,23 @@
 @SpringBootApplication
 public class ConsumingRestApplication {
 
-	private static final Logger log = LoggerFactory.getLogger(ConsumingRestApplication.class);
+  private static final Logger log = LoggerFactory.getLogger(ConsumingRestApplication.class);
 
-	public static void main(String[] args) {
-		SpringApplication.run(ConsumingRestApplication.class, args);
-	}
+  public static void main(String[] args) {
+    SpringApplication.run(ConsumingRestApplication.class, args);
+  }
 
-	@Bean
-	public RestTemplate restTemplate(RestTemplateBuilder builder) {
-		return builder.build();
-	}
+  @Bean
+  public RestTemplate restTemplate(RestTemplateBuilder builder) {
+    return builder.build();
+  }
 
-	@Bean
-	public CommandLineRunner run(RestTemplate restTemplate) throws Exception {
-		return args -> {
-			Quote quote = restTemplate.getForObject(
-					"https://gturnquist-quoters.cfapps.io/api/random", Quote.class);
-			log.info(quote.toString());
-		};
-	}
+  @Bean
+  public CommandLineRunner run(RestTemplate restTemplate) throws Exception {
+    return args -> {
+      Quote quote =
+          restTemplate.getForObject("https://gturnquist-quoters.cfapps.io/api/random", Quote.class);
+      log.info(quote.toString());
+    };
+  }
 }

consuming-rest/src/main/java/com/example/consumingrest/Quote.java

@@ -5,33 +5,29 @@
 @JsonIgnoreProperties(ignoreUnknown = true)
 public class Quote {
 
-	private String type;
-	private Value value;
-
-	public Quote() {
-	}
-
-	public String getType() {
-		return type;
-	}
-
-	public void setType(String type) {
-		this.type = type;
-	}
-
-	public Value getValue() {
-		return value;
-	}
-
-	public void setValue(Value value) {
-		this.value = value;
-	}
-
-	@Override
-	public String toString() {
-		return "Quote{" +
-				"type='" + type + '\'' +
-				", value=" + value +
-				'}';
-	}
-}
+  private String type;
+  private Value value;
+
+  public Quote() {}
+
+  public String getType() {
+    return type;
+  }
+
+  public void setType(String type) {
+    this.type = type;
+  }
+
+  public Value getValue() {
+    return value;
+  }
+
+  public void setValue(Value value) {
+    this.value = value;
+  }
+
+  @Override
+  public String toString() {
+    return "Quote{" + "type='" + type + '\'' + ", value=" + value + '}';
+  }
+}

consuming-rest/src/main/java/com/example/consumingrest/Value.java

@@ -5,33 +5,29 @@
 @JsonIgnoreProperties(ignoreUnknown = true)
 public class Value {
 
-	private Long id;
-	private String quote;
-
-	public Value() {
-	}
-
-	public Long getId() {
-		return this.id;
-	}
-
-	public String getQuote() {
-		return this.quote;
-	}
-
-	public void setId(Long id) {
-		this.id = id;
-	}
-
-	public void setQuote(String quote) {
-		this.quote = quote;
-	}
-
-	@Override
-	public String toString() {
-		return "Value{" +
-				"id=" + id +
-				", quote='" + quote + '\'' +
-				'}';
-	}
-}
+  private Long id;
+  private String quote;
+
+  public Value() {}
+
+  public Long getId() {
+    return this.id;
+  }
+
+  public String getQuote() {
+    return this.quote;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public void setQuote(String quote) {
+    this.quote = quote;
+  }
+
+  @Override
+  public String toString() {
+    return "Value{" + "id=" + id + ", quote='" + quote + '\'' + '}';
+  }
+}

consuming-rest/src/test/java/com/example/consumingrest/ConsumingRestApplicationTests.java

@@ -6,8 +6,6 @@
 @SpringBootTest
 class ConsumingRestApplicationTests {
 
-	@Test
-	void contextLoads() {
-	}
-
+  @Test
+  void contextLoads() {}
 }

customapplication/src/test/java/com/examplehub/customapplication/CustomapplicationApplicationTests.java

@@ -6,8 +6,6 @@
 @SpringBootTest
 class CustomapplicationApplicationTests {
 
-	@Test
-	void contextLoads() {
-	}
-
+  @Test
+  void contextLoads() {}
 }

custombanner/src/main/java/com/examplehub/custombanner/CustombannerApplication.java

@@ -6,8 +6,7 @@
 @SpringBootApplication
 public class CustombannerApplication {
 
-	public static void main(String[] args) {
-		SpringApplication.run(CustombannerApplication.class, args);
-	}
-
+  public static void main(String[] args) {
+    SpringApplication.run(CustombannerApplication.class, args);
+  }
 }

custombanner/src/test/java/com/examplehub/custombanner/CustombannerApplicationTests.java

@@ -6,8 +6,6 @@
 @SpringBootTest
 class CustombannerApplicationTests {
 
-	@Test
-	void contextLoads() {
-	}
-
+  @Test
+  void contextLoads() {}
 }

helloworld/src/test/java/com/examplehub/helloworld/HomeControllerTests.java

@@ -1,10 +1,10 @@
 package com.examplehub.helloworld;
+
 import static org.hamcrest.Matchers.equalTo;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
 import org.junit.jupiter.api.Test;
-
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
 import org.springframework.boot.test.context.SpringBootTest;
@@ -16,13 +16,12 @@
 @AutoConfigureMockMvc
 public class HomeControllerTests {
 
-	@Autowired
-	private MockMvc mvc;
+  @Autowired private MockMvc mvc;
 
-	@Test
-	public void getHello() throws Exception {
-		mvc.perform(MockMvcRequestBuilders.get("/").accept(MediaType.APPLICATION_JSON))
-				.andExpect(status().isOk())
-				.andExpect(content().string(equalTo("Hello World!")));
-	}
+  @Test
+  public void getHello() throws Exception {
+    mvc.perform(MockMvcRequestBuilders.get("/").accept(MediaType.APPLICATION_JSON))
+        .andExpect(status().isOk())
+        .andExpect(content().string(equalTo("Hello World!")));
+  }
 }

lazyinitialization/src/main/java/com/examplehub/lazyinitialization/User.java

@@ -1,36 +1,33 @@
 package com.examplehub.lazyinitialization;
 
 public class User {
-    private String name;
-    private int age;
+  private String name;
+  private int age;
 
-    public User(String name, int age) {
-        this.name = name;
-        this.age = age;
+  public User(String name, int age) {
+    this.name = name;
+    this.age = age;
     System.out.println(name + " initialized!");
-    }
+  }
 
-    public String getName() {
-        return name;
-    }
+  public String getName() {
+    return name;
+  }
 
-    public void setName(String name) {
-        this.name = name;
-    }
+  public void setName(String name) {
+    this.name = name;
+  }
 
-    public int getAge() {
-        return age;
-    }
+  public int getAge() {
+    return age;
+  }
 
-    public void setAge(int age) {
-        this.age = age;
-    }
+  public void setAge(int age) {
+    this.age = age;
+  }
 
-    @Override
-    public String toString() {
-        return "User{" +
-                "name='" + name + '\'' +
-                ", age=" + age +
-                '}';
-    }
+  @Override
+  public String toString() {
+    return "User{" + "name='" + name + '\'' + ", age=" + age + '}';
+  }
 }

lazyinitialization/src/test/java/com/examplehub/lazyinitialization/LazyinitializationApplicationTests.java

@@ -6,8 +6,6 @@
 @SpringBootTest
 class LazyinitializationApplicationTests {
 
-	@Test
-	void contextLoads() {
-	}
-
+  @Test
+  void contextLoads() {}
 }

rest-service/src/main/java/com/example/restservice/GreetingController.java

@@ -1,11 +1,10 @@
 package com.example.restservice;
 
+import java.util.concurrent.atomic.AtomicLong;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
-import java.util.concurrent.atomic.AtomicLong;
-
 @RestController
 public class GreetingController {
   private final AtomicLong counter = new AtomicLong();

rest-service/src/main/java/com/example/restservice/RestServiceApplication.java

@@ -6,7 +6,7 @@
 @SpringBootApplication
 public class RestServiceApplication {
 
-	public static void main(String[] args) {
-		SpringApplication.run(RestServiceApplication.class, args);
-	}
+  public static void main(String[] args) {
+    SpringApplication.run(RestServiceApplication.class, args);
+  }
 }

rest-service/src/test/java/com/example/restservice/RestServiceApplicationTests.java

@@ -6,8 +6,6 @@
 @SpringBootTest
 class RestServiceApplicationTests {
 
-	@Test
-	void contextLoads() {
-	}
-
+  @Test
+  void contextLoads() {}
 }

upload-files/src/main/java/com/examplehub/uploadfiles/UploadController.java

@@ -1,5 +1,11 @@
 package com.examplehub.uploadfiles;
 
+import java.io.File;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+import java.util.Objects;
 import org.springframework.stereotype.Controller;
 import org.springframework.util.StringUtils;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -8,13 +14,6 @@
 import org.springframework.web.multipart.MultipartFile;
 import org.springframework.web.servlet.mvc.support.RedirectAttributes;
 
-import java.io.File;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.nio.file.StandardCopyOption;
-import java.util.Objects;
-
 @Controller
 public class UploadController {