Java String Java Encode javaEncode(String s)

Description

Convert a string to a Java literal using the correct escape sequences.

License

Open Source License

Parameter

Parameter	Description
s	the text to convert

Return

the Java representation

Declaration

public static String javaEncode(String s) 

Method Source Code

//package com.java2s;
/*//w  ww. j a v  a  2 s. co m
 * Copyright (c) 2007-2010 Centimia Ltd.
 * All rights reserved.  Unpublished -- rights reserved
 *
 * Use of a copyright notice is precautionary only, and does
 * not imply publication or disclosure.
 *  
 * Multiple-Licensed under the H2 License,
 * Version 1.0, and under the Eclipse Public License, Version 1.0
 * (http://h2database.com/html/license.html).
 * Initial Developer: H2 Group, Centimia Inc.
 */

public class Main {
    /**
     * Convert a string to a Java literal using the correct escape sequences.
     * The literal is not enclosed in double quotes. The result can be used in
     * properties files or in Java source code.
     *
     * @param s the text to convert
     * @return the Java representation
     */
    public static String javaEncode(String s) {
        int length = s.length();
        StringBuilder buff = new StringBuilder(length);
        for (int i = 0; i < length; i++) {
            char c = s.charAt(i);
            switch (c) {
            case '\t':
                // HT horizontal tab
                buff.append("\\t");
                break;
            case '\n':
                // LF linefeed
                buff.append("\\n");
                break;
            case '\f':
                // FF form feed
                buff.append("\\f");
                break;
            case '\r':
                // CR carriage return
                buff.append("\\r");
                break;
            case '"':
                // double quote
                buff.append("\\\"");
                break;
            case '\\':
                // backslash
                buff.append("\\\\");
                break;
            default:
                int ch = c & 0xffff;
                if (ch >= ' ' && (ch < 0x80)) {
                    buff.append(c);
                } else {
                    buff.append("\\u");
                    // make sure it's four characters
                    buff.append(Integer.toHexString(0x10000 | ch).substring(1));
                }
            }
        }
        return buff.toString();
    }
}

Related

1. javaEncode(String s)
2. javaEncode(String txt)
3. javaEncode(String txt)