org.apache.any23.util
Class StringUtils

java.lang.Object
  org.apache.any23.util.StringUtils

public class StringUtils
extends Object

This class provides a set of string utility methods.

Author:

Michele Mostarda (mostarda@fbk.eu)

Method Summary

static int	countNL(String in) Counts the number of NL in the given in string.
static int	countOccurrences(String container, String content) Counts how many times content appears within container without string overlapping.
static String	escapeAsJSONString(String in) Escapes the in string as JSON string to let it being embeddable within a string field.
static String	escapeDoubleQuotes(String in) Escapes all the unescaped double quotes when needed.
static boolean	isPrefix(String candidatePrefix, String container) Check whether string candidatePrefix is prefix of string container.
static boolean	isSuffix(String candidateSuffix, String container) Check whether string candidateSuffix is suffix of string container.
static String	join(String delimiter, String... data) Joins the given input sting data list using the specified delimiter.
static String	multiply(char c, int times) Builds a string composed of the given char c n times.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

join

public static String join(String delimiter,
                          String... data)

Joins the given input sting data list using the specified delimiter.

Parameters:

delimiter - string delimiter.

data - list of data to be joined.

Returns:

the joined string.

countOccurrences

public static int countOccurrences(String container,
                                   String content)

Counts how many times content appears within container without string overlapping.

Parameters:

container - container string.

content - content string.

Returns:

occurrences count.

countNL

public static int countNL(String in)

Counts the number of NL in the given in string.

Parameters:

in - input string.

Returns:

the number of new line chars.

isPrefix

public static boolean isPrefix(String candidatePrefix,
                               String container)

Check whether string candidatePrefix is prefix of string container.

Parameters:

candidatePrefix -

container -

Returns:

isSuffix

public static boolean isSuffix(String candidateSuffix,
                               String container)

Check whether string candidateSuffix is suffix of string container.

Parameters:

candidateSuffix -

container -

Returns:

escapeDoubleQuotes

public static String escapeDoubleQuotes(String in)

Escapes all the unescaped double quotes when needed.

Parameters:

in - input string.

Returns:

unescaped output.

escapeAsJSONString

public static String escapeAsJSONString(String in)

Escapes the in string as JSON string to let it being embeddable within a string field.

Parameters:

in - string to be escaped.

Returns:

escaped string.

multiply

public static String multiply(char c,
                              int times)

Builds a string composed of the given char c n times.

Parameters:

c - char to be multiplied.

times - number of times.

Returns:

the string containing the multiplied char.