Merge pull request #281 from ankurkaushal/master

Reformat according to google style guide

lazy-loading/src/main/java/com/iluwatar/lazy/loading/App.java

@@ -4,34 +4,33 @@ package com.iluwatar.lazy.loading;
  * 
  * Lazy loading idiom defers object creation until needed.
  * <p>
- * This example shows different implementations of the pattern
- * with increasing sophistication.
+ * This example shows different implementations of the pattern with increasing sophistication.
  * <p>
  * Additional information and lazy loading flavours are described in
  * http://martinfowler.com/eaaCatalog/lazyLoad.html
  *
  */
-public class App 
-{
-	/**
-	 * Program entry point
-	 * @param args command line args
-	 */
-    public static void main( String[] args ) {
-    	
-    	// Simple lazy loader - not thread safe
-    	HolderNaive holderNaive = new HolderNaive();
-    	Heavy heavy = holderNaive.getHeavy();
-    	System.out.println("heavy=" + heavy);
-    	
-    	// Thread safe lazy loader, but with heavy synchronization on each access
-    	HolderThreadSafe holderThreadSafe = new HolderThreadSafe();
-    	Heavy another = holderThreadSafe.getHeavy();
-    	System.out.println("another=" + another);
-    	
-    	// The most efficient lazy loader utilizing Java 8 features
-    	Java8Holder java8Holder = new Java8Holder();
-    	Heavy next = java8Holder.getHeavy();
-    	System.out.println("next=" + next);
-    }
+public class App {
+  /**
+   * Program entry point
+   * 
+   * @param args command line args
+   */
+  public static void main(String[] args) {
+
+    // Simple lazy loader - not thread safe
+    HolderNaive holderNaive = new HolderNaive();
+    Heavy heavy = holderNaive.getHeavy();
+    System.out.println("heavy=" + heavy);
+
+    // Thread safe lazy loader, but with heavy synchronization on each access
+    HolderThreadSafe holderThreadSafe = new HolderThreadSafe();
+    Heavy another = holderThreadSafe.getHeavy();
+    System.out.println("another=" + another);
+
+    // The most efficient lazy loader utilizing Java 8 features
+    Java8Holder java8Holder = new Java8Holder();
+    Heavy next = java8Holder.getHeavy();
+    System.out.println("next=" + next);
+  }
 }

lazy-loading/src/main/java/com/iluwatar/lazy/loading/Heavy.java

@@ -7,13 +7,13 @@ package com.iluwatar.lazy.loading;
  */
 public class Heavy {
 
-	public Heavy() {
-		System.out.println("Creating Heavy ...");
-		try {
-			Thread.sleep(1000);
-		} catch (InterruptedException e) {
-			e.printStackTrace();
-		}
-		System.out.println("... Heavy created");
-	}
+  public Heavy() {
+    System.out.println("Creating Heavy ...");
+    try {
+      Thread.sleep(1000);
+    } catch (InterruptedException e) {
+      e.printStackTrace();
+    }
+    System.out.println("... Heavy created");
+  }
 }

lazy-loading/src/main/java/com/iluwatar/lazy/loading/HolderNaive.java

@@ -2,22 +2,21 @@ package com.iluwatar.lazy.loading;
 
 /**
  * 
- * Simple implementation of the lazy loading idiom.
- * However, this is not thread safe.
+ * Simple implementation of the lazy loading idiom. However, this is not thread safe.
  *
  */
 public class HolderNaive {
-	
-	private Heavy heavy;
-	
-	public HolderNaive() {
-		System.out.println("HolderNaive created");
-	}
 
-	public Heavy getHeavy() {
-		if (heavy == null) {
-			heavy = new Heavy();
-		}
-		return heavy;
-	}
+  private Heavy heavy;
+
+  public HolderNaive() {
+    System.out.println("HolderNaive created");
+  }
+
+  public Heavy getHeavy() {
+    if (heavy == null) {
+      heavy = new Heavy();
+    }
+    return heavy;
+  }
 }

lazy-loading/src/main/java/com/iluwatar/lazy/loading/HolderThreadSafe.java

@@ -2,23 +2,22 @@ package com.iluwatar.lazy.loading;
 
 /**
  * 
- * Same as HolderNaive but with added synchronization.
- * This implementation is thread safe, but each {@link #getHeavy()}
- * call costs additional synchronization overhead.
+ * Same as HolderNaive but with added synchronization. This implementation is thread safe, but each
+ * {@link #getHeavy()} call costs additional synchronization overhead.
  *
  */
 public class HolderThreadSafe {
-	
-	private Heavy heavy;
-	
-	public HolderThreadSafe() {
-		System.out.println("HolderThreadSafe created");
-	}
 
-	public synchronized Heavy getHeavy() {
-		if (heavy == null) {
-			heavy = new Heavy();
-		}
-		return heavy;
-	}
+  private Heavy heavy;
+
+  public HolderThreadSafe() {
+    System.out.println("HolderThreadSafe created");
+  }
+
+  public synchronized Heavy getHeavy() {
+    if (heavy == null) {
+      heavy = new Heavy();
+    }
+    return heavy;
+  }
 }

lazy-loading/src/main/java/com/iluwatar/lazy/loading/Java8Holder.java

@@ -4,31 +4,34 @@ import java.util.function.Supplier;
 
 /**
  * 
- * This lazy loader is thread safe and more efficient than {@link HolderThreadSafe}.
- * It utilizes Java 8 functional interface {@link Supplier<T>} as {@link Heavy} factory.
+ * This lazy loader is thread safe and more efficient than {@link HolderThreadSafe}. It utilizes
+ * Java 8 functional interface {@link Supplier<T>} as {@link Heavy} factory.
  *
  */
 public class Java8Holder {
-	
-	private Supplier<Heavy> heavy = () -> createAndCacheHeavy();
-	
-	public Java8Holder() {
-		System.out.println("Java8Holder created");
-	}
 
-	public Heavy getHeavy() {
-		return heavy.get();
-	}
-	
-	private synchronized Heavy createAndCacheHeavy() {
-		class HeavyFactory implements Supplier<Heavy> {
-			private final Heavy heavyInstance = new Heavy();
-			@Override
-			public Heavy get() { return heavyInstance; }
-		}
-		if (!HeavyFactory.class.isInstance(heavy)) {
-			heavy = new HeavyFactory();
-		}
-		return heavy.get();
-	}
+  private Supplier<Heavy> heavy = () -> createAndCacheHeavy();
+
+  public Java8Holder() {
+    System.out.println("Java8Holder created");
+  }
+
+  public Heavy getHeavy() {
+    return heavy.get();
+  }
+
+  private synchronized Heavy createAndCacheHeavy() {
+    class HeavyFactory implements Supplier<Heavy> {
+      private final Heavy heavyInstance = new Heavy();
+
+      @Override
+      public Heavy get() {
+        return heavyInstance;
+      }
+    }
+    if (!HeavyFactory.class.isInstance(heavy)) {
+      heavy = new HeavyFactory();
+    }
+    return heavy.get();
+  }
 }

lazy-loading/src/test/java/com/iluwatar/lazy/loading/AppTest.java

@@ -11,9 +11,9 @@ import com.iluwatar.lazy.loading.App;
  */
 public class AppTest {
 
-	@Test
-	public void test() {
-		String[] args = {};
-		App.main(args);
-	}
+  @Test
+  public void test() {
+    String[] args = {};
+    App.main(args);
+  }
 }

lazy-loading/src/test/java/com/iluwatar/lazy/loading/HolderThreadSafeTest.java

@@ -8,35 +8,38 @@ import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
 
 /**
- * Using reflection this test shows that the heavy field is not instantiated until the method getHeavy is called
+ * Using reflection this test shows that the heavy field is not instantiated until the method
+ * getHeavy is called
  *
  * Created by jones on 11/10/2015.
  */
 public class HolderThreadSafeTest {
 
-    @Test
-    public void test() throws IllegalAccessException {
-        HolderThreadSafe hts = new HolderThreadSafe();
+  @Test
+  public void test() throws IllegalAccessException {
+    HolderThreadSafe hts = new HolderThreadSafe();
 
-        {//first call is null
-            Field[] ff = HolderThreadSafe.class.getDeclaredFields();
-            for (Field f: ff) {
-                f.setAccessible(true);
-            }
+    {
+      // first call is null
+      Field[] ff = HolderThreadSafe.class.getDeclaredFields();
+      for (Field f : ff) {
+        f.setAccessible(true);
+      }
 
-            assertNull(ff[0].get(hts));
-        }
-
-        // now it is lazily loaded
-        hts.getHeavy();
-
-        {//now it is not null - call via reflection so that the test is the same before and after
-            Field[] ff = HolderThreadSafe.class.getDeclaredFields();
-            for (Field f: ff) {
-                f.setAccessible(true);
-            }
-
-            assertNotNull(ff[0].get(hts));
-        }
+      assertNull(ff[0].get(hts));
     }
+
+    // now it is lazily loaded
+    hts.getHeavy();
+
+    {
+      // now it is not null - call via reflection so that the test is the same before and after
+      Field[] ff = HolderThreadSafe.class.getDeclaredFields();
+      for (Field f : ff) {
+        f.setAccessible(true);
+      }
+
+      assertNotNull(ff[0].get(hts));
+    }
+  }
 }