Java笔记之java.lang.String#trim String的trim()方法是使用频率频率很高的一个方法,直到不久前我不确定trim去除两端的空白符时对换行符是怎么处理的点进去看了下源码的实现,才发现String#trim的实现跟我想像的完全不一样,原来一直以来我对这个函数存在着很深的误解。
In the following example, we have a string “Hello, World!” and we are using theStringBuffer.deleteCharAt()method to delete the last character. Stringstr="Hello, World!";StringBufferstringBuffer=newStringBuffer(str);if(stringBuffer.length()>0){stringBuffer.deleteCharAt(stringBuffer.length()-1...
16)___ returns the last character in a StringBuilder variable named strBuf? 16) ___ A)StringBuilder.charAt(strBuf.capacity() - 1) B)strBuf.charAt(strBuf.capacity() - 1) C)StringBuilder.charAt(strBuf.length() - 1) D)strBuf.charAt(strBuf.length() - 1) 17)Assume StringBuilder...
dropLast(n: Int): String 去掉后n个字符,返回其余的字符串,等同于substring(0, str.length - n) //删掉后4个字符 println(str.dropLast(4)) //输出结果:12345 1. 2. 3. dropWhile(predicate: (Char) -> Boolean): String 根据条件从前往后逐一去掉字符,直到不满足条件时则返回后面的字符串,该方法参数...
The index of the first character is 0, while the index of the last character is length()-1. For example, the following code gets the character at index 9 in a string: String anotherPalindrome = "Niagara. O roar again!"; char aChar = anotherPalindrome.charAt(9); Indices begin at 0...
Returns a string whose value is this string, with all leading and trailing space removed, where space is defined as any character whose codepoint is less than or equal to'U+0020'(the space character). C# [Android.Runtime.Register("trim","()Ljava/lang/String;","")]publicstringTrim();...
String trim()返回一个新字符串。 这个字符串将删除了原始字符串头部和尾部的空格。 String join( CharSequence delimiter, CharSequence... elements )返回一个新字符串,用给定的定界符连接所有元素。 Boolean matches(String regex)验证字符串是否符合正则表达式,符合返回true ...
importorg.springframework.util.StringUtils;//导入方法依赖的package包/类privatevoidrecursiveCreate(ZooKeeper zk,String path,byte[] data)throwsKeeperException, InterruptedException{if("/".equals(path.trim()))return; path = StringUtils.trimTrailingCharacter(path,'/'); ...
String(byte[] bytes, String charsetName) Constructs a new String by decoding the specified array of bytes using the specified charset. String(char[] value) Allocates a new String so that it represents the sequence of characters currently contained in the character array argument. String(char[...
Otherwise, returns a substring of this string beginning with the first code point of this string up to and including the last code point that is not aCharacter#isWhitespace(int) white space. This method may be used to trimCharacter#isWhitespace(int) white spacefrom the end of a string. ...