publicclassStringReplacement{publicstaticStringreplaceAt(Stringoriginal,Stringreplacement,intindex){if(index<0||index>=original.length()){thrownewIndexOutOfBoundsException("Index is out of bounds.");}// 如果替换的位置正好在字符串的起始处if(index==0){returnreplacement+original.substring(replacement.leng...
方法/步骤 1 反斜杠：\\ 斜杠：/public static void main(String[] args) {String fileUrl="/pdf/test.pdf";fileUrl= fileUrl.replace("/", "\\");System.out.println("fileUrl "+fileUrl);}在fileurl用反斜杠替换旧的斜杠 2 运行结果如图，(/)斜杠替换成一个反斜杠(\) ，由于反斜杠是转义符号...
publicclassStringReplaceExample{publicstaticvoidmain(String[]args){Stringstr="Hello, World!";intindex=7;charreplacement='J';StringReplaceExampleexample=newStringReplaceExample();if(example.isValidIndex(str,index)){StringreplacedStr=example.replaceCharAtIndex(str,index,replacement);System.out.println("Or...
System.out.println(myName); http://stackoverflow.com/questions/6952363/java-replace-a-character-at-a-specific-index-in-a-string
把字符串拼接 String concat(String str) 其他方法 代码语言:javascript 代码运行次数:0 运行 AI代码解释 // 1. 替换功能 String replace(char old,char new) String replace(String old,String new) // 2. 去除字符串两端空格 String trim() // 3. 按字典比较功能 int compareTo(String str) int ...
System.out.println("Char at index 1: "+ charAt);// 字符串拼接Stringconcatenated=str.concat(" How are you?"); System.out.println("Concatenated: "+ concatenated);// 字符串比较booleanequals=str.equals("Hello, World!"); System.out.println("Equals: "+ equals);// 忽略大小写比较booleanequals...
privatevoidset(ThreadLocal<?>key,Object value){// We don't use a fast path as with get() because it is at// least as common to use set() to create new entries as// it is to replace existing ones, in which case, a fast// path would fail more often than not.Entry[]tab=table...
replaceFirst(regex, "at")); Try it Yourself »Definition and UsageThe replaceFirst() method replaces the first match of a regular expression in a string with a new substring.Replacement strings may contain a backreference in the form $n where n is the index of a group in the pattern....
replace对你replaceAll有用,使用正则表达式,\\是特殊字符的前缀,比如\\s空格,\\.任何字符等。String test = "paloalto\\paloalto\\";test = test.replace("paloalto\\", "sanhose\\");System.out.println(test);因为replaceAll您可以将 的结果Pattern.quote用作第一个参数,将 的结果Matcher.quoteReplacement用...
Java String replace() Java String replaceAll() Java String substring() Java String equals() Java String equalsIgnoreCase() Java String contains() Java String indexOf() Java String trim() Java String charAt() Java String toLowerCase() Java String concat() Java String valueOf() Java String ma...