匿名类替换为lambda表达式

hutool-cache/src/main/java/cn/hutool/cache/impl/TimedCache.java

@@ -1,12 +1,12 @@
 package cn.hutool.cache.impl;
 
+import cn.hutool.cache.GlobalPruneTimer;
+
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.Map;
 import java.util.concurrent.ScheduledFuture;
 
-import cn.hutool.cache.GlobalPruneTimer;
-
 /**
  * 定时缓存<br>
  * 此缓存没有容量限制，对象只有在过期后才会被移除
@@ -72,12 +72,7 @@ public class TimedCache<K, V> extends AbstractCache<K, V> {
 	 * @param delay 间隔时长，单位毫秒
 	 */
 	public void schedulePrune(long delay) {
-		this.pruneJobFuture = GlobalPruneTimer.INSTANCE.schedule(new Runnable() {
-			@Override
-			public void run() {
-				prune();
-			}
-		}, delay);
+		this.pruneJobFuture = GlobalPruneTimer.INSTANCE.schedule(this::prune, delay);
 	}
 
 	/**

hutool-core/src/main/java/cn/hutool/core/collection/IterUtil.java

@@ -1,19 +1,14 @@
 package cn.hutool.core.collection;
 
-import java.util.ArrayList;
-import java.util.Enumeration;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-
 import cn.hutool.core.lang.Filter;
 import cn.hutool.core.map.MapUtil;
 import cn.hutool.core.util.ArrayUtil;
 import cn.hutool.core.util.ReflectUtil;
 import cn.hutool.core.util.StrUtil;
 
+import java.util.*;
+import java.util.Map.Entry;
+
 /**
  * {@link Iterable} 和 {@link Iterator} 相关工具类
  * 
@@ -511,12 +506,7 @@ public class IterUtil {
 	 * @return {@link Iterable}
 	 */
 	public static <E> Iterable<E> asIterable(final Iterator<E> iter) {
-		return new Iterable<E>() {
-			@Override
-			public Iterator<E> iterator() {
-				return iter;
-			}
-		};
+		return () -> iter;
 	}
 
 	/**

hutool-core/src/main/java/cn/hutool/core/date/DateRange.java

@@ -1,9 +1,9 @@
 package cn.hutool.core.date;
 
-import java.util.Date;
-
 import cn.hutool.core.lang.Range;
 
+import java.util.Date;
+
 /**
  * 日期范围
  * 
@@ -47,16 +47,12 @@ public class DateRange extends Range<DateTime> {
 	 * @param isIncludeEnd 是否包含结束的时间
 	 */
 	public DateRange(Date start, Date end, final DateField unit, final int step, boolean isIncludeStart, boolean isIncludeEnd) {
-		super(DateUtil.date(start), DateUtil.date(end), new Steper<DateTime>() {
-
-			@Override
-			public DateTime step(DateTime current, DateTime end, int index) {
-				DateTime dt = current.offsetNew(unit, step);
-				if (dt.isAfter(end)) {
-					return null;
-				}
-				return current.offsetNew(unit, step);
+		super(DateUtil.date(start), DateUtil.date(end), (current, end1, index) -> {
+			DateTime dt = current.offsetNew(unit, step);
+			if (dt.isAfter(end1)) {
+				return null;
 			}
+			return current.offsetNew(unit, step);
 		}, isIncludeStart, isIncludeEnd);
 	}
 

hutool-core/src/main/java/cn/hutool/core/date/SystemClock.java

@@ -3,7 +3,6 @@ package cn.hutool.core.date;
 import java.sql.Timestamp;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
-import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.TimeUnit;
 
 /**
@@ -37,20 +36,12 @@ public class SystemClock {
 	 * 开启计时器线程
 	 */
 	private void scheduleClockUpdating() {
-		ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor(new ThreadFactory(){
-			@Override
-			public Thread newThread(Runnable runnable) {
-				Thread thread = new Thread(runnable, "System Clock");
-				thread.setDaemon(true);
-				return thread;
-			}
+		ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor(runnable -> {
+			Thread thread = new Thread(runnable, "System Clock");
+			thread.setDaemon(true);
+			return thread;
 		});
-		scheduler.scheduleAtFixedRate(new Runnable(){
-			@Override
-			public void run() {
-				now = System.currentTimeMillis();
-			}
-		}, period, period, TimeUnit.MILLISECONDS);
+		scheduler.scheduleAtFixedRate(() -> now = System.currentTimeMillis(), period, period, TimeUnit.MILLISECONDS);
 	}
 
 	/**

hutool-core/src/main/java/cn/hutool/core/io/watch/watchers/DelayWatcher.java

@@ -1,16 +1,16 @@
 package cn.hutool.core.io.watch.watchers;
 
+import cn.hutool.core.collection.ConcurrentHashSet;
+import cn.hutool.core.io.watch.Watcher;
+import cn.hutool.core.lang.Assert;
+import cn.hutool.core.thread.ThreadUtil;
+
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.nio.file.WatchEvent;
 import java.nio.file.WatchService;
 import java.util.Set;
 
-import cn.hutool.core.collection.ConcurrentHashSet;
-import cn.hutool.core.io.watch.Watcher;
-import cn.hutool.core.lang.Assert;
-import cn.hutool.core.thread.ThreadUtil;
-
 /**
  * 延迟观察者<br>
  * 使用此观察者通过定义一定的延迟时间，解决{@link WatchService}多个modify的问题<br>
@@ -95,13 +95,10 @@ public class DelayWatcher implements Watcher {
 	 * @param currentPath 事件发生的当前Path路径
 	 */
 	private void startHandleModifyThread(final WatchEvent<?> event, final Path currentPath) {
-		ThreadUtil.execute(new Runnable(){
-			@Override
-			public void run() {
-				ThreadUtil.sleep(delay);
-				eventSet.remove(Paths.get(currentPath.toString(), event.context().toString()));
-				watcher.onModify(event, currentPath);
-			}
+		ThreadUtil.execute(() -> {
+			ThreadUtil.sleep(delay);
+			eventSet.remove(Paths.get(currentPath.toString(), event.context().toString()));
+			watcher.onModify(event, currentPath);
 		});
 	}
 	//---------------------------------------------------------------------------------------------------------- Private method end

hutool-core/src/main/java/cn/hutool/core/lang/ConsistentHash.java

@@ -1,12 +1,12 @@
 package cn.hutool.core.lang;
 
+import cn.hutool.core.util.HashUtil;
+
 import java.io.Serializable;
 import java.util.Collection;
 import java.util.SortedMap;
 import java.util.TreeMap;
 
-import cn.hutool.core.util.HashUtil;
-
 /**
  * 一致性Hash算法
  * 算法详解：http://blog.csdn.net/sparkliang/article/details/5279393
@@ -32,13 +32,9 @@ public class ConsistentHash<T> implements Serializable{
 	 */
 	public ConsistentHash(int numberOfReplicas, Collection<T> nodes) {
 		this.numberOfReplicas = numberOfReplicas;
-		this.hashFunc = new HashFunc() {
-			
-			@Override
-			public Integer hash(Object key) {
-				//默认使用FNV1hash算法
-				return HashUtil.fnvHash(key.toString());
-			}
+		this.hashFunc = key -> {
+			//默认使用FNV1hash算法
+			return HashUtil.fnvHash(key.toString());
 		};
 		//初始化节点
 		for (T node : nodes) {

hutool-core/src/main/java/cn/hutool/core/lang/JarClassLoader.java

@@ -1,19 +1,18 @@
 package cn.hutool.core.lang;
 
-import java.io.File;
-import java.io.FileFilter;
-import java.io.IOException;
-import java.lang.reflect.Method;
-import java.net.URL;
-import java.net.URLClassLoader;
-import java.util.List;
-
 import cn.hutool.core.exceptions.UtilException;
 import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.util.ClassUtil;
 import cn.hutool.core.util.ReflectUtil;
 import cn.hutool.core.util.URLUtil;
 
+import java.io.File;
+import java.io.IOException;
+import java.lang.reflect.Method;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.List;
+
 /**
  * 外部Jar的类加载器
  *
@@ -143,12 +142,7 @@ public class JarClassLoader extends URLClassLoader {
 	 * @return jar文件列表
 	 */
 	private static List<File> loopJar(File file) {
-		return FileUtil.loopFiles(file, new FileFilter() {
-			@Override
-			public boolean accept(File file) {
-				return isJarFile(file);
-			}
-		});
+		return FileUtil.loopFiles(file, JarClassLoader::isJarFile);
 	}
 
 	/**

hutool-core/src/main/java/cn/hutool/core/lang/Validator.java

@@ -1,9 +1,5 @@
 package cn.hutool.core.lang;
 
-import java.net.MalformedURLException;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
 import cn.hutool.core.date.DateUtil;
 import cn.hutool.core.exceptions.ValidateException;
 import cn.hutool.core.util.NumberUtil;
@@ -11,6 +7,10 @@ import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.core.util.ReUtil;
 import cn.hutool.core.util.StrUtil;
 
+import java.net.MalformedURLException;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 /**
  * 字段验证器
  *
@@ -465,12 +465,7 @@ public class Validator {
 	 * @since 3.3.0
 	 */
 	public static boolean isLetter(CharSequence value) {
-		return StrUtil.isAllCharMatch(value, new cn.hutool.core.lang.Matcher<Character>() {
-			@Override
-			public boolean match(Character t) {
-				return Character.isLetter(t);
-			}
-		});
+		return StrUtil.isAllCharMatch(value, Character::isLetter);
 	}
 
 	/**
@@ -498,12 +493,7 @@ public class Validator {
 	 * @since 3.3.0
 	 */
 	public static boolean isUpperCase(CharSequence value) {
-		return StrUtil.isAllCharMatch(value, new cn.hutool.core.lang.Matcher<Character>() {
-			@Override
-			public boolean match(Character t) {
-				return Character.isUpperCase(t);
-			}
-		});
+		return StrUtil.isAllCharMatch(value, Character::isUpperCase);
 	}
 
 	/**
@@ -531,12 +521,7 @@ public class Validator {
 	 * @since 3.3.0
 	 */
 	public static boolean isLowerCase(CharSequence value) {
-		return StrUtil.isAllCharMatch(value, new cn.hutool.core.lang.Matcher<Character>() {
-			@Override
-			public boolean match(Character t) {
-				return Character.isLowerCase(t);
-			}
-		});
+		return StrUtil.isAllCharMatch(value, Character::isLowerCase);
 	}
 
 	/**

hutool-core/src/main/java/cn/hutool/core/thread/ThreadFactoryBuilder.java

@@ -1,13 +1,13 @@
 package cn.hutool.core.thread;
 
+import cn.hutool.core.builder.Builder;
+import cn.hutool.core.util.StrUtil;
+
 import java.lang.Thread.UncaughtExceptionHandler;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.atomic.AtomicLong;
 
-import cn.hutool.core.builder.Builder;
-import cn.hutool.core.util.StrUtil;
-
 /**
  * ThreadFactory创建器<br>
  * 参考：Guava的ThreadFactoryBuilder
@@ -125,24 +125,21 @@ public class ThreadFactoryBuilder implements Builder<ThreadFactory>{
 		final Integer priority = builder.priority;
 		final UncaughtExceptionHandler handler = builder.uncaughtExceptionHandler;
 		final AtomicLong count = (null == namePrefix) ? null : new AtomicLong();
-		return new ThreadFactory() {
-			@Override
-			public Thread newThread(Runnable r) {
-				final Thread thread = backingThreadFactory.newThread(r);
-				if (null != namePrefix) {
-					thread.setName(namePrefix + count.getAndIncrement());
-				}
-				if (null != daemon) {
-					thread.setDaemon(daemon);
-				}
-				if (null != priority) {
-					thread.setPriority(priority);
-				}
-				if (null != handler) {
-					thread.setUncaughtExceptionHandler(handler);
-				}
-				return thread;
+		return r -> {
+			final Thread thread = backingThreadFactory.newThread(r);
+			if (null != namePrefix) {
+				thread.setName(namePrefix + count.getAndIncrement());
 			}
+			if (null != daemon) {
+				thread.setDaemon(daemon);
+			}
+			if (null != priority) {
+				thread.setPriority(priority);
+			}
+			if (null != handler) {
+				thread.setUncaughtExceptionHandler(handler);
+			}
+			return thread;
 		};
 	}
 }

hutool-core/src/main/java/cn/hutool/core/util/ReUtil.java

@@ -1,15 +1,5 @@
 package cn.hutool.core.util;
 
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Comparator;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Set;
-import java.util.TreeSet;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
 import cn.hutool.core.collection.CollectionUtil;
 import cn.hutool.core.convert.Convert;
 import cn.hutool.core.exceptions.UtilException;
@@ -18,6 +8,10 @@ import cn.hutool.core.lang.PatternPool;
 import cn.hutool.core.lang.Validator;
 import cn.hutool.core.lang.func.Func1;
 
+import java.util.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 /**
  * 正则相关工具类<br>
  * 常用正则请见 {@link Validator}
@@ -174,12 +168,7 @@ public class ReUtil {
 		}
 
 		//提取模板中的编号
-		final TreeSet<Integer> varNums = new TreeSet<>(new Comparator<Integer>() {
-			@Override
-			public int compare(Integer o1, Integer o2) {
-				return ObjectUtil.compare(o2, o1);
-			}
-		});
+		final TreeSet<Integer> varNums = new TreeSet<>((o1, o2) -> ObjectUtil.compare(o2, o1));
 		final Matcher matcherForTemplate = PatternPool.GROUP_VAR.matcher(template);
 		while (matcherForTemplate.find()) {
 			varNums.add(Integer.parseInt(matcherForTemplate.group(1)));

hutool-dfa/src/main/java/cn/hutool/dfa/SensitiveUtil.java

@@ -1,13 +1,12 @@
 package cn.hutool.dfa;
 
-import java.util.Collection;
-import java.util.List;
-import java.util.concurrent.Callable;
-
 import cn.hutool.core.thread.ThreadUtil;
 import cn.hutool.core.util.StrUtil;
 import cn.hutool.json.JSONUtil;
 
+import java.util.Collection;
+import java.util.List;
+
 /**
  * 敏感词工具类
  * @author Looly
@@ -33,13 +32,9 @@ public final class SensitiveUtil {
 	 */
 	public static void init(final Collection<String> sensitiveWords, boolean isAsync){
 		if(isAsync){
-			ThreadUtil.execAsync(new Callable<Boolean>(){
-				@Override
-				public Boolean call() throws Exception {
-					init(sensitiveWords);
-					return true;
-				}
-				
+			ThreadUtil.execAsync(() -> {
+				init(sensitiveWords);
+				return true;
 			});
 		}else{
 			init(sensitiveWords);