In this post, we will how to capitalize first letter in java
Capitalize first letter of String
Here are the steps to convert first letter of string to uppercase in java
- Get first letter of String
firstLetStrusingstr.substring(0,1). - Get remaining String
remLetStrusingstr.substring(1). - Convert first letter of String
firstLetStrto upper Case usingtoUpperCase()method. - Concatenate both the String
firstLetStrandremLetStr.
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package org.arpit.java2blog; public class CapitalizeFirstLetterMain { public static void main(String[] args) { // create a string String name = "java2blog"; System.out.println("Original String: " + name); // get First letter of the string String firstLetStr = name.substring(0, 1); // Get remaining letter using substring String remLetStr = name.substring(1); // convert the first letter of String to uppercase firstLetStr = firstLetStr.toUpperCase(); // concantenate the first letter and remaining string String firstLetterCapitalizedName = firstLetStr + remLetStr; System.out.println("String with first letter as Capital: " + firstLetterCapitalizedName); } } |
Output:
Original String: java2blog
String with first letter as Capital: Java2blog
String with first letter as Capital: Java2blog
Capitalize first letter of each word
Here are the steps to capitalize first letter of each word.
- Split String by space and assign it String array
words - Iterate over the String array words and do following:
- Get first letter of String
firstLetterusingstr.substring(0,1). - Get remaining String
remainingLettersusingstr.substring(1). - Convert first letter of String
firstLetterto upper Case usingtoUpperCase()method. - Concatenate both the String
firstLetterandremainingLetters.
- Get first letter of String
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package org.arpit.java2blog; public class CapitalizeFirstLetterMain { public static void main(String[] args) { // create a string String str = "this is java code"; String words[]=str.split("\\s"); String capitalizeStr=""; for(String word:words){ // Capitalize first letter String firstLetter=word.substring(0,1); // Get remaining letter String remainingLetters=word.substring(1); capitalizeStr+=firstLetter.toUpperCase()+remainingLetters+" "; } System.out.println(capitalizeStr); } } |
Output:
This Is Java Code
That’s all about How to capitalize first letter in java.
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