String Manipulator

Text Manipulating_src_CaseManipulation.java

/*
 * Name: Geoffrey Zoref
 * Date: 10/7/2018
 * Project: Text Processing and Wrapper Classes
 */

import java.util.Scanner;

public class CaseManipulation {


    public static String upperCase(String str) {

        String result = " ";

        for (int i = 0; i < str.length() - 1; i++) {
            char charTemp = str.charAt(i);
            char charUpper = Character.toUpperCase(charTemp);
            result = result + charUpper;
        }
        return result;
    }

    public static String lowerCase(String str) {

        String result = " ";

        for (int i = 0; i < str.length() - 1; i++) {
            char charTemp = str.charAt(i);
            char charUpper = Character.toLowerCase(charTemp);
            result = result + charUpper;
        }
        return result;
    }

    public static String camelCase(String str) {

        String result = " ";

        if(str.length() == 0) {
            return result;
        }
        char firstChar = str.charAt(0);
        char firstCharUpper = Character.toUpperCase(firstChar);
        result = result + firstCharUpper;

        for (int i = 1; i < str.length(); i++) {
            char currentChar = str.charAt(i);
            char previousChar = str.charAt(i - 1);

            if(previousChar == ' ') {
                char currentCharUpper = Character.toUpperCase(currentChar);
                result = result + currentCharUpper;
            }else {
                char currentCharLower = Character.toLowerCase(currentChar);
                result = result + currentCharLower;
            }
        }

        return result;
    }


    public static String javaCamelCase(String s) {

        String[] parts = s.split(" ");
        String camelCaseString = "";
        for (int i = 0; i < parts.length; i++) {
            String part = parts[i];
            camelCaseString = camelCaseString + toProperCase(part);
        }
        return camelCaseString;
    }

    static String toProperCase(String s) {
        return s.substring(0, 1).toUpperCase() +
               s.substring(1).toLowerCase();
    }


    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);

        System.out.println("Enter String");
        String word1 = input.nextLine();

        System.out.println("Upper Case: " + upperCase(word1));
        System.out.println("Lower case: " + lowerCase(word1));
        System.out.println("CamelCase: " + camelCase(word1));
        System.out.println("Java Camel Case: " + javaCamelCase(word1));


    }
}


/**

 */

Text Manipulating_Text Manipulating.iml

<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
  <component name="NewModuleRootManager" inherit-compiler-output="true">
    <exclude-output />
    <content url="file://$MODULE_DIR$">
      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
    </content>
    <orderEntry type="inheritedJdk" />
    <orderEntry type="sourceFolder" forTests="false" />
  </component>
</module>