例如,我们想要去掉字符o和l: publicclassRemoveMultipleCharacters{publicstaticvoidmain(String[]args){StringoriginalString="Hello, World!";StringcharsToRemove="ol";StringmodifiedString=removeCharacters(originalString,charsToRemove);System.out.println("Original String: "+originalString);System.out.println("Modifi...
public class RemoveSpecialCharacters { /** * 去除字符串中的特殊字符 * * @param input 输入的字符串 * @return 去除特殊字符后的字符串 */ public static String removeSpecialCharacters(String input) { StringBuilder result = new StringBuilder(); for (char c : input.toCharArray()) { // 判断字符...
publicclassRemoveLastCharacters{publicstaticvoidmain(String[]args){Stringstr="Hello, world!";intnumCharsToRemove=1;// 要去掉的字符个数// 使用substring方法StringnewStr1=str.substring(0,str.length()-numCharsToRemove);System.out.println("使用substring方法: "+newStr1);// 使用StringBuilderStringBuilder...
*/publicstaticStringremoveSpecialCharacters(String str){// 使用正则表达式替换所有非字母数字字符为空字符串// \\p{Punct} 表示标点符号,\\p{Space} 表示空白字符,\\p{Digit} 表示数字// 但我们想要保留数字,所以只替换非字母和非数字字符// 注意:Java中正则表达式中的反斜杠需要被转义,所以写作 \\// 也...
Special Characters 有些情况下,只允许保留部分字符,例如数字、字母、空格、下划线等等,该怎么办呢? 这时候可以使用正则表达式。 如下面的例子: // remove all the special characters a part of alpha numeric charactersStringtext="This - word ! has \\ /allot # of % special % characters";text=text.repl...
import java.util.regex.Pattern; public class RemoveSpecialCharacters { public static void main(String[] args) { String str = "Hello, World!@#$%^&*()_+=-"; // 使用正则表达式去掉特殊字符 String result = str.replaceAll("[^a-zA-Z0-9]", ""); System.out.println(result); } } 复制代...
How does Java remove the characters specfed n the strng? 方法三:把原字符串转化为字符数组,然后原理与直接插入排序原理类似 packagecom.de.test;publicclasstest {publicstaticvoidmain(String[] args) { String str= "How does Java remove the characters specified in the string?";chardelChar = 'e';...
publicstaticString usingRegex(String text) {if(text == null || text.length() == 0) {returntext; }returntext.replaceAll(".$", ""); } UsingStringBuffer.deleteCharAt()Method Another solution would be using theStringBufferclass. This class simply denotes a mutable sequence of characters. Unlik...
java regex unicode non-ascii-characters 我有如下输入字符串。 String comment = "Good morning! \u2028\u2028I am looking to purchase a new Honda car as I\u2019m outgrowing my current car. I currently drive a Hyundai Accent and I was looking for something a little bit larger and more ...
{publicstaticStringremoveSpecialCharacters(Stringinput){String[]specialCharacters={"@","#","$","%"};for(Stringcharacter:specialCharacters){input=input.replace(character,"");}returninput;}publicstaticvoidmain(String[]args){Stringinput="Hello, @World!";Stringoutput=removeSpecialCharacters(input);...