add methods

hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java

@@ -1,5 +1,6 @@
 package cn.hutool.core.text;
 
+import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.comparator.VersionComparator;
 import cn.hutool.core.convert.Convert;
 import cn.hutool.core.lang.Assert;
@@ -4233,6 +4234,19 @@ public class CharSequenceUtil {
 		return ArrayUtil.join(objs, conjunction);
 	}
 
+	/**
+	 * 以 conjunction 为分隔符将多个对象转换为字符串
+	 *
+	 * @param conjunction 分隔符
+	 * @param iterable    集合
+	 * @return 连接后的字符串
+	 * @see CollUtil#join(Iterable, CharSequence)
+	 * @since 5.6.6
+	 */
+	public static <T> String join(CharSequence conjunction, Iterable<T> iterable) {
+		return CollUtil.join(iterable, conjunction);
+	}
+
 	/**
 	 * 字符串的每一个字符是否都与定义的匹配器匹配
 	 *

hutool-core/src/test/java/cn/hutool/core/util/RuntimeUtilTest.java

@@ -26,6 +26,13 @@ public class RuntimeUtilTest {
 		Console.log(str);
 	}
 
+	@Test
+	@Ignore
+	public void execCmdTest2() {
+		String str = RuntimeUtil.execForStr("cmd /c cd C:\\Program Files (x86)");
+		Console.log(str);
+	}
+
 	@Test
 	public void getUsableMemoryTest(){
 		Assert.assertTrue(RuntimeUtil.getUsableMemory() > 0);