Converts a string to the string literal representation. - Java java.lang

Java examples for java.lang:String Unicode

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Description

Converts a string to the string literal representation.

Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) {
        String str = "java2s.com";
        System.out.println(convertToLiteral(str));
    }/*from   ww  w. ja va2 s  .c o m*/

    /** Converts a string to the string literal representation. */
    public final static String convertToLiteral(String str) {
        int i = 0;
        int l = str.length();
        char c;
        String num;
        StringBuffer buf;
        int n;

        buf = new StringBuffer(l + 2);
        buf.append('"');
        while (i < l) {
            c = str.charAt(i++);
            switch (c) {
            case '\n':
                buf.append("\\n");
                break;
            case '\t':
                buf.append("\\t");
                break;
            case '\b':
                buf.append("\\b");
                break;
            case '\r':
                buf.append("\\r");
                break;
            case '\f':
                buf.append("\\f");
                break;
            case '\\':
                buf.append("\\\\");
                break;
            case '"':
                buf.append("\\\"");
                break;
            default:
                if ((c < (char) 32) || (c > (char) 127)) {
                    buf.append("\\u");
                    num = Integer.toOctalString((int) c);
                    while (num.length() < 4)
                        num = "0" + num;
                    buf.append(num);
                } else {
                    buf.append(c);
                } // end if
            } // end switch
        } // end while
        buf.append('"');
        return buf.toString();
    }
}

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