The replace() method in Java String is used to replace all occurrences of a specified character or substring with a new character or substring. It creates and returns a new string with the replacements, leaving the original string unchanged since strings in Java are immutable....
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...
Replaces all occurrences of a substring Replaces the first occurrence of a substring Removes the first occurrence of a substring None of the above Show Answer 2. Which package is required to use the String class in Java? java.util java.lang java.io java.net Show Answer 3. What is the...
2. String.replaceAll() Example The following Java program demonstrates the usage of replaceAll() API. 2.1. Replace All Occurrences of a Word The following Java program replaces all occurrences of “java” with “scala“. String str = "how to do in java !! a java blog !!"; Assertions....
It searches the string for specified oldChar and replaces each occurrence of oldChar with the newChar. The second method accepts the String types. It searches the string for the specified target substring and replaces each occurrence with the replacement. 2. Replace All Occurrences of a ...
1.使用 String.replace() 方法 用另一个字符替换字符串中所有出现的字符的标准解决方案是 String.replace() 方法。它的用法如下所示: 1 2 3 4 5 6 7 8 9 10 11 public class Main { public static void main(String[] args) { String str = "A|B|C|D|E"; char ch = '|'; str = str.re...
Java String replaceAll() 示例:替换字符 让我们看一个替换所有出现的单个字符的示例。 publicclassReplaceAllExample1{publicstaticvoidmain(String args[]){ String s1="javatpoint is a very good website"; String replaceString=s1.replaceAll("a","e");//replaces all occurrences of "a" to "e"System...
publicstaticvoidmain(String[] args) {Stringstr1 ="Java123is456fun";// regex for sequence of digitsStringregex ="\\d+";// replace all occurrences of numeric// digits by a spaceSystem.out.println(str1.replaceAll(regex," ")); }
replace(char oldChar, char newChar) Returns a string resulting from replacing all occurrences of oldChar in this string with newChar. String replace(CharSequence target, CharSequence replacement) Replaces each substring of this string that matches the literal target sequence with the specified litera...
过滤掉String(java)中指定的子字符串. 我们来看一下[官方文档]中有关字符串内容转换的方法: String replace(char oldChar, char newChar) Returns a new string resulting from replacing all occurrences of oldChar in this string with newChar.