fix code

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

@@ -27,7 +27,6 @@ import java.util.List;
 import java.util.Locale;
 import java.util.TimeZone;
 import java.util.concurrent.TimeUnit;
-import java.util.regex.Matcher;
 
 /**
  * 时间工具类
@@ -931,7 +930,6 @@ public class DateUtil extends CalendarUtil {
 
 		//标准日期格式（包括单个数字的日期时间）
 		dateStr = normalize(dateStr);
-		final Matcher matcher = DatePattern.REGEX_NORM.matcher(dateStr);
 		if (ReUtil.isMatch(DatePattern.REGEX_NORM, dateStr)) {
 			final int colonCount = StrUtil.count(dateStr, CharUtil.COLON);
 			switch (colonCount) {

hutool-core/src/main/java/cn/hutool/core/img/gif/GifDecoder.java

@@ -778,9 +778,6 @@ public class GifDecoder {
 		lastRect = new Rectangle(ix, iy, iw, ih);
 		lastImage = image;
 		lastBgColor = bgColor;
-		int dispose = 0;
-		boolean transparency = false;
-		int delay = 0;
 		lct = null;
 	}
 

hutool-core/src/main/java/cn/hutool/core/img/gif/NeuQuant.java

@@ -350,10 +350,7 @@ public class NeuQuant {
 	/* Unbias network to give byte values 0..255 and record position i to prepare for sort
 	   ----------------------------------------------------------------------------------- */
 	public void unbiasnet() {
-
+		for (int i = 0; i < NETSIZE; i++) {
-		int i, j;
-
-		for (i = 0; i < NETSIZE; i++) {
 			network[i][0] >>= NETBIASSHIFT;
 			network[i][1] >>= NETBIASSHIFT;
 			network[i][2] >>= NETBIASSHIFT;

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

@@ -387,7 +387,6 @@ public class IdcardUtil {
 
 		// 首字母A-Z，A表示1，以此类推
 		char start = idcard.charAt(0);
-		int iStart = start - 'A' + 1;
 		String mid = card.substring(1, 7);
 		String end = card.substring(7, 8);
 		char[] chars = mid.toCharArray();

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

@@ -2038,7 +2038,6 @@ public class PrimitiveArrayUtil {
 		}
 		int i = Math.max(startIndexInclusive, 0);
 		int j = Math.min(array.length, endIndexExclusive) - 1;
-		long tmp;
 		while (j > i) {
 			swap(array, i, j);
 			j--;
@@ -2073,7 +2072,6 @@ public class PrimitiveArrayUtil {
 		}
 		int i = Math.max(startIndexInclusive, 0);
 		int j = Math.min(array.length, endIndexExclusive) - 1;
-		int tmp;
 		while (j > i) {
 			swap(array, i, j);
 			j--;
@@ -2108,7 +2106,6 @@ public class PrimitiveArrayUtil {
 		}
 		int i = Math.max(startIndexInclusive, 0);
 		int j = Math.min(array.length, endIndexExclusive) - 1;
-		short tmp;
 		while (j > i) {
 			swap(array, i, j);
 			j--;
@@ -2143,7 +2140,6 @@ public class PrimitiveArrayUtil {
 		}
 		int i = Math.max(startIndexInclusive, 0);
 		int j = Math.min(array.length, endIndexExclusive) - 1;
-		char tmp;
 		while (j > i) {
 			swap(array, i, j);
 			j--;
@@ -2178,7 +2174,6 @@ public class PrimitiveArrayUtil {
 		}
 		int i = Math.max(startIndexInclusive, 0);
 		int j = Math.min(array.length, endIndexExclusive) - 1;
-		byte tmp;
 		while (j > i) {
 			swap(array, i, j);
 			j--;
@@ -2213,7 +2208,6 @@ public class PrimitiveArrayUtil {
 		}
 		int i = Math.max(startIndexInclusive, 0);
 		int j = Math.min(array.length, endIndexExclusive) - 1;
-		double tmp;
 		while (j > i) {
 			swap(array, i, j);
 			j--;
@@ -2248,7 +2242,6 @@ public class PrimitiveArrayUtil {
 		}
 		int i = Math.max(startIndexInclusive, 0);
 		int j = Math.min(array.length, endIndexExclusive) - 1;
-		float tmp;
 		while (j > i) {
 			swap(array, i, j);
 			j--;
@@ -2283,7 +2276,6 @@ public class PrimitiveArrayUtil {
 		}
 		int i = Math.max(startIndexInclusive, 0);
 		int j = Math.min(array.length, endIndexExclusive) - 1;
-		boolean tmp;
 		while (j > i) {
 			swap(array, i, j);
 			j--;

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

@@ -54,8 +54,7 @@ public class RadixUtil {
 	public static String encode(final String radixs, final int num) {
 		//考虑到负数问题
 		long tmpNum = (num >= 0 ? num : (0x100000000L - (~num + 1)));
-
+		return encode(radixs, tmpNum, 32);
-		return encode(radixs, num, 32);
 	}
 
 	/**
@@ -73,7 +72,7 @@ public class RadixUtil {
 		return encode(radixs, num, 64);
 	}
 
-	private static String encode(final String radixs, final long num, int maxLength) {
+	private static String encode(final String radixs, long num, int maxLength) {
 		if (radixs.length() < 2) {
 			throw new RuntimeException("自定义进制最少两个字符哦！");
 		}

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

@@ -660,7 +660,6 @@ public class ZipUtil {
 	public static void read(ZipInputStream zipStream, Consumer<ZipEntry> consumer) {
 		try {
 			ZipEntry zipEntry;
-			File outItemFile;
 			while (null != (zipEntry = zipStream.getNextEntry())) {
 				consumer.accept(zipEntry);
 			}

hutool-core/src/test/java/cn/hutool/core/bean/BeanUtilTest.java

@@ -164,7 +164,7 @@ public class BeanUtilTest {
 	public void mapToBeanWinErrorTest() {
 		Map<String, String> map = new HashMap<>();
 		map.put("age", "哈哈");
-		Person user = BeanUtil.toBean(map, Person.class);
+		BeanUtil.toBean(map, Person.class);
 	}
 
 	@Test
@@ -559,7 +559,6 @@ public class BeanUtilTest {
 	@Test
 	public void toMapTest() {
 		// 测试转map的时候返回key
-		String name = null;
 		PrivilegeIClassification a = new PrivilegeIClassification();
 		a.setId("1");
 		a.setName("2");

hutool-cron/src/main/java/cn/hutool/cron/listener/TaskListenerManager.java

@@ -16,7 +16,7 @@ public class TaskListenerManager implements Serializable {
 	private static final long serialVersionUID = 1L;
 
 	private final List<TaskListener> listeners = new ArrayList<>();
-	
+
 	/**
 	 * 增加监听器
 	 * @param listener {@link TaskListener}
@@ -28,7 +28,7 @@ public class TaskListenerManager implements Serializable {
 		}
 		return this;
 	}
-	
+
 	/**
 	 * 移除监听器
 	 * @param listener {@link TaskListener}
@@ -40,14 +40,13 @@ public class TaskListenerManager implements Serializable {
 		}
 		return this;
 	}
-	
+
 	/**
 	 * 通知所有监听任务启动器启动
 	 * @param executor {@link TaskExecutor}
 	 */
 	public void notifyTaskStart(TaskExecutor executor) {
 		synchronized (listeners) {
-			int size = listeners.size();
 			TaskListener listener;
 			for (TaskListener taskListener : listeners) {
 				listener = taskListener;
@@ -57,20 +56,19 @@ public class TaskListenerManager implements Serializable {
 			}
 		}
 	}
-	
+
 	/**
 	 * 通知所有监听任务启动器成功结束
 	 * @param executor {@link TaskExecutor}
 	 */
 	public void notifyTaskSucceeded(TaskExecutor executor) {
 		synchronized (listeners) {
-			int size = listeners.size();
 			for (TaskListener listener : listeners) {
 				listener.onSucceeded(executor);
 			}
 		}
 	}
-	
+
 	/**
 	 * 通知所有监听任务启动器结束并失败<br>
 	 * 无监听将打印堆栈到命令行

hutool-json/src/main/java/cn/hutool/json/JSONUtil.java

@@ -675,14 +675,12 @@ public class JSONUtil {
 			return writer;
 		}
 
-		char b; // 前一个字符
 		char c; // 当前字符
 		int len = str.length();
 		if (isWrap) {
 			writer.write('"');
 		}
 		for (int i = 0; i < len; i++) {
-//			b = c;
 			c = str.charAt(i);
 			switch (c) {
 				case '\\':
@@ -690,13 +688,6 @@ public class JSONUtil {
 					writer.write("\\");
 					writer.write(c);
 					break;
-					//此处转义导致输出不和预期一致
-//				case '/':
-//					if (b == '<') {
-//						writer.write('\\');
-//					}
-//					writer.write(c);
-//					break;
 				default:
 					writer.write(escape(c));
 			}

pom.xml

@@ -44,6 +44,7 @@
 		<compile.version>8</compile.version>
 		<junit.version>4.13.2</junit.version>
 		<lombok.version>1.18.20</lombok.version>
+		<jmh.version>1.32</jmh.version>
 	</properties>
 
 	<dependencies>
@@ -60,6 +61,19 @@
 			<version>${lombok.version}</version>
 			<scope>test</scope>
 		</dependency>
+		<!-- 性能测试 -->
+		<dependency>
+			<groupId>org.openjdk.jmh</groupId>
+			<artifactId>jmh-core</artifactId>
+			<version>${jmh.version}</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.openjdk.jmh</groupId>
+			<artifactId>jmh-generator-annprocess</artifactId>
+			<version>${jmh.version}</version>
+			<scope>test</scope>
+		</dependency>
 	</dependencies>
 
 	<issueManagement>