From 2630befe2daed1c54739a07c15a7afdaa6909135 Mon Sep 17 00:00:00 2001
From: ray bi <ray.bi@cn.bosch.com>
Date: Tue, 16 Aug 2022 13:23:43 +0800
Subject: [PATCH 1/3] check whether the string has letter character

---
 .../java/cn/hutool/core/util/StrUtil.java     | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
index e0d6dc119..9f4bfc667 100755
--- a/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
@@ -468,4 +468,24 @@ public class StrUtil extends CharSequenceUtil implements StrPool {
 	public static String format(CharSequence template, Map<?, ?> map, boolean ignoreNull) {
 		return StrFormatter.format(template, map, ignoreNull);
 	}
+
+	/**
+	 * <p>指定字符串数组中，是否包含空字符串。</p>
+	 * <p>如果传入参数对象不是为空,则返回false。如果传入的参数不是String则返回false 如果字符串包含字母,不区分大小写,则返回true</p>
+	 * @param obj 对象
+	 * @return 如果为字符串,是否有字母
+	 */
+	public static boolean hasLetter(Object obj) {
+		if (null == obj) {
+			return false;
+		} else if (obj instanceof String) {
+			char[] chars = ((String) obj).toCharArray();
+			for (char c : chars){
+				if (CharUtil.isLetter(c)){
+					return true;
+				}
+			}
+		}
+		return false;
+	}
 }

From ef0c6b82ad59aa44bc40fdb4b7bf63910a153ed9 Mon Sep 17 00:00:00 2001
From: ray bi <ray.bi@cn.bosch.com>
Date: Thu, 18 Aug 2022 11:20:23 +0800
Subject: [PATCH 2/3] move method into CharSequenceUtil

---
 .../cn/hutool/core/text/CharSequenceUtil.java | 20 +++++++++++++++++++
 .../java/cn/hutool/core/util/StrUtil.java     | 19 ------------------
 2 files changed, 20 insertions(+), 19 deletions(-)

diff --git a/hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java b/hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java
index aa730aef9..92a40b715 100755
--- a/hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java
@@ -4495,4 +4495,24 @@ public class CharSequenceUtil {
 		}
 		return str + repeat(fixedChar, fixedLength);
 	}
+
+	/**
+	 * <p>指定字符串数组中，是否包含空字符串。</p>
+	 * <p>如果传入参数对象不是为空,则返回false。如果字符串包含字母,不区分大小写,则返回true</p>
+	 *
+	 * @param str 对象
+	 * @return 如果为字符串, 是否有字母
+	 */
+	public static boolean hasLetter(CharSequence str) {
+		if (null == str) {
+			return false;
+		}
+		for (int i = 0; i < str.length(); i++) {
+			if (CharUtil.isLetter(str.charAt(i))) {
+				return true;
+			}
+		}
+		return false;
+	}
+
 }
diff --git a/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
index 9f4bfc667..957dc4644 100755
--- a/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
@@ -469,23 +469,4 @@ public class StrUtil extends CharSequenceUtil implements StrPool {
 		return StrFormatter.format(template, map, ignoreNull);
 	}
 
-	/**
-	 * <p>指定字符串数组中，是否包含空字符串。</p>
-	 * <p>如果传入参数对象不是为空,则返回false。如果传入的参数不是String则返回false 如果字符串包含字母,不区分大小写,则返回true</p>
-	 * @param obj 对象
-	 * @return 如果为字符串,是否有字母
-	 */
-	public static boolean hasLetter(Object obj) {
-		if (null == obj) {
-			return false;
-		} else if (obj instanceof String) {
-			char[] chars = ((String) obj).toCharArray();
-			for (char c : chars){
-				if (CharUtil.isLetter(c)){
-					return true;
-				}
-			}
-		}
-		return false;
-	}
 }

From 54778f49d61b91aa240683fe058c527688327a60 Mon Sep 17 00:00:00 2001
From: ray bi <ray.bi@cn.bosch.com>
Date: Thu, 18 Aug 2022 11:23:47 +0800
Subject: [PATCH 3/3] remove the black line

---
 hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java | 1 -
 1 file changed, 1 deletion(-)

diff --git a/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
index 957dc4644..e0d6dc119 100755
--- a/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/util/StrUtil.java
@@ -468,5 +468,4 @@ public class StrUtil extends CharSequenceUtil implements StrPool {
 	public static String format(CharSequence template, Map<?, ?> map, boolean ignoreNull) {
 		return StrFormatter.format(template, map, ignoreNull);
 	}
-
 }