Remove whitespace from both sides of a string: String myStr = " Hello World! "; System.out.println(myStr); System.out.println(myStr.trim()); Try it Yourself » Definition and UsageThe trim() method removes whitespace from both ends of a string.Note...
Learn to write a java program to remove all the white spaces from a given string using regular expression (“\\s”) and isWhitespace() method. Learn to write a Java program toremove all the white spaces and non-visible charactersfrom a givenstring. It may not be needed in real world a...
Remove All Whitespace Characters If you need toremove all whitespace characters from a string, you can use theString replaceAll() methodwith proper regex. classMain{publicstaticvoidmain(String[] args){ String str1 ="Learn\nJava \n\n "; String result;// replace all whitespace characters with ...
static booleanisBlank(java.lang.String pStr) Return true if pStr is null, the empty string, or consists entirely of whitespace where whitespace is defined by the String.trim method. static booleanisEmpty(java.lang.String pStr) Return true if pStr is null or has length zero. ...
Stringstr=" Hello, World!";StringtrimmedStr=removeLeadingSpaces(str);System.out.println(trimmedStr);// Output: "Hello, World!"publicstaticStringremoveLeadingSpaces(Stringstr){inti=0;while(i<str.length()&&Character.isWhitespace(str.charAt(i))){i++;}returnstr.substring(i);} ...
publicclassRemoveEnglishLetters{publicstaticvoidmain(String[]args){Stringstr="中文abc123";StringBuildersb=newStringBuilder();for(inti=0;i<str.length();i++){charc=str.charAt(i);if((c>=0x4E00&&c<=0x9FA5)||Character.isWhitespace(c)){sb.append(c);}}System.out.println(sb.toString());}}...
3. Remove Leading as well as Trailing Whitespaces 3.1. UsingString.trim() If we want toremove surrounding whitespaces from string, then the best way is to useString.trim()method. String blogName = " how to do in java "; String trimmedString = blogName.trim(); ...
String trim() // remove whitespace from the beginning and end of a String. 5) method chaining "AniMal ".trim().toLowerCase().replace('a','A'); 2. StringBuilder StringBuilder changes its own state andreturns a reference to itself. ...
public class Exercise31 { // Define the main method. public static void main(String[] args) { // Declare and initialize a string variable. String str = " Java Exercises "; // Trim the whitespace from the front and back of the String. String new_str = str.trim(); // Display the ...
// 去除注释StringremoveComment=StringUtils.replacePattern(code,"(?:/\\*(?:[^*]|(?:\\*+[^*/]))*\\*+/)|(?://.*)","");// 去除空格StringremoveWhitespace=StringUtils.replacePattern(removeComment,"\\s+","");// 多个空格替换为一个StringoneWhiteSpace=StringUtils.replacePattern(removeComme...