String类的replace()方法有多种重载版本,可以替换字符或子字符串。 示例代码 publicclassReplaceExample{publicstaticvoidmain(String[]args){Stringtext="I love apples and apples are my favorite.";// 替换单个字符StringreplacedChar=text.re
public String replace(char oldChar, char newChar); 1. Returns a string resulting from replacing all occurrences of {@code oldChar} in this string with {@code newChar}. If the character {@code oldChar} does not occur in the character sequence represented by this {@code String} object, t...
System.out.println(myName); http://stackoverflow.com/questions/6952363/java-replace-a-character-at-a-specific-index-in-a-string
String str1="asdljbbabdjsfkaa3938bb";charc_low=str.charAt(0); System.out.println(c_low);charc_up=Character.toUpperCase(c_low); str=str.replaceFirst(String.valueOf(c_low), String.valueOf(c_up)); System.out.println(str);//使用String的replace(oldChar,newChar)str1=str1.replace('b'...
String#forEach 函数原型 : 代码语言:javascript 代码运行次数:0 运行 AI代码解释 /** * 在每个字符上执行给定的[动作]。 */publicinline fun CharSequence.forEach(action:(Char)->Unit):Unit{for(elementinthis)action(element)} 代码示例 : 代码语言:javascript ...
public String replaceAll(String regex, String replacement) { return Pattern.compile(regex).matcher(this).replaceAll(replacement); } replace各个方法的原理 我们通过以下的例子来分析他们的原理。 @Test public void stringReplace() { replaceFirst("year = 1929. month=07, day=29, other=\\d{2}"); ...
Note: If the character to be replaced is not in the string, replace() returns the original string. Example 2: Java String replace() Substrings class Main { public static void main(String[] args) { String str1 = "C++ Programming"; // all occurrences of "C++" is replaced with "Java"...
Return a new string where all "l" characters are replaced with "p" characters: String myStr = "Hello"; System.out.println(myStr.replace('l', 'p')); Try it Yourself » Definition and UsageThe replace() method searches a string for a specified character, and returns a new string whe...
publicStringreplaceSpace(String s){// 获取原始字符串长度byte[]sb=s.getBytes();// 获取替换字符串长度byte[]addByte="%20".getBytes();// 计算被替换字符串出现次数int addIndex=0;for(int i=0;i<sb.length;i++){if(sb[i]==32){addIndex++;}}// 计算新字符串长度char[]c=newchar[sb.length...
In tutorial, We'll learn about Java String replace() method and explanation with examples. replace() method is used to replace a character with another character in a String and this method returns a new string after replacing characters....