How to Capitalize String in Java Program

on November 30, 2016

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Capitalize String in Java

This example program about, How to Capitalize String in Java.

Capitalize String in Java without using Library

CapitalizeExample1.java

package com.dineshkrish.commons;
/**
* 
* @author Dinesh Krishnan
*
*/
public class CapitalizeExample1 {
public static String doCapitalize(String strValue) {
// Defining StringBuilder Object
StringBuilder sb = new StringBuilder();
if (strValue != null && !strValue.isEmpty()) {
// Splitting the String 
String[] words = strValue.split(" ");
for (int i = 0; i < words.length; i++) {
// Capitalizing String using 'replaseFirst()' method
words[i] = words[i].replaceFirst(String.valueOf(words[i]
.charAt(0)), String.valueOf(Character
.toUpperCase(words[i].charAt(0))));
// Appending String to StringBuilder
sb.append(words[i] + " ");
}
}
return sb.toString();
}
public static void main(String[] args) {
String changed = doCapitalize("dinesh krishnan");
System.out.println(changed);
}
}

[su_box title=”Output”]Dinesh Krishnan[/su_box]

Capitalize String in Java using Apache Commons Library

commons-lang3-3.5.jar

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CapitalizeExample2.java

package com.dineshkrish.commons;
import org.apache.commons.lang3.text.WordUtils;
/**
* 
* @author Dinesh Krishnan
*
*/
public class CapitalizeExample2 {
public static void main(String[] args) {
// Actual String Value
String strValue = "dinesh krishnan";
// Calling the method from Apache Commons API
String capitalized = WordUtils.capitalize(strValue);
// Printing the Result
System.out.println("Before Capitalize :"+strValue);
System.out.println("Afer Captialize :"+capitalized);
}
}

[su_box title=”Output”]Before Capitalize :dinesh krishnan
Afer Captialize :Dinesh Krishnan
[/su_box]