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Java examples for java.lang:String Camel Case

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Description

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Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        String inputString = "java2s.com";
        System.out.println(toCamelCaseString(inputString));
    }//from  w  w w . j a va 2s.  co m

    public static String toCamelCaseString(String inputString) {
        return toCamelCaseString(inputString, false);
    }

    public static String toCamelCaseString(String inputString,
            boolean firstCharacterUppercase) {
        if (inputString == null)
            return null;
        StringBuilder sb = new StringBuilder();
        boolean nextUpperCase = false;
        for (int i = 0; i < inputString.length(); i++) {
            char c = inputString.charAt(i);

            switch (c) {
            case '_':
            case '-':
            case '@':
            case '$':
            case '#':
            case ' ':
            case '/':
            case '&':
                if (sb.length() > 0) {
                    nextUpperCase = true;
                }
                break;

            default:
                if (nextUpperCase) {
                    sb.append(Character.toUpperCase(c));
                    nextUpperCase = false;
                } else {
                    sb.append(Character.toLowerCase(c));
                }
                break;
            }
        }

        if (firstCharacterUppercase) {
            sb.setCharAt(0, Character.toUpperCase(sb.charAt(0)));
        }

        return sb.toString();
    }
}

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