claw.tatsu.common

Class Utility

java.lang.Object

claw.tatsu.common.Utility

public final class Utility
extends java.lang.Object

This class contains utilities methods that are useful in the whole project. Mostly to implements java 1.8 features that are not present in java 1.7.

Author:

clementval

Method Summary

Modifier and Type	Method and Description
static java.util.List<java.lang.String>	convertToList(java.lang.Object rawObject) Convert an object back to a list of string
static int	countOccurrences(java.lang.String source, java.lang.String pattern) Count the number of occurrences of pattern in source string.
static <T> boolean	hasIntersection(java.util.Set<T> set, java.util.Set<T> list) Check if there is an intersection between the set and the list.
static <T> java.lang.String	join(java.lang.String delimiter, java.util.List<T> elements) Join a list of String elements into a single String.
static java.lang.String	join(java.lang.String delimiter, java.lang.String[] elements) Join an array of String elements into a single String.
static void	printWithIndent(int indent, java.lang.String value) Print a string with a specified indentation at the beginning.

Methods inherited from class java.lang.Object

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

Method Detail

join

public static java.lang.String join(java.lang.String delimiter,
                                    java.lang.String[] elements)

Join an array of String elements into a single String.

Parameters:

delimiter - Delimiter to be placed between each element.

elements - Array of String elements.

Returns:

A joined string of all elements separated by the delimiter.

join

public static <T> java.lang.String join(java.lang.String delimiter,
                                        java.util.List<T> elements)

Join a list of String elements into a single String.

Type Parameters:

T - Type of element in the list.

Parameters:

delimiter - Delimiter to be placed between each element.

elements - List of String elements.

Returns:

A joined string of all elements separated by the delimiter.

convertToList

public static java.util.List<java.lang.String> convertToList(java.lang.Object rawObject)

Convert an object back to a list of string

Parameters:

rawObject - Raw object to be converted.

Returns:

A list of string values. If the raw object is null or not an original list of string, the returned list will be empty.

hasIntersection

public static <T> boolean hasIntersection(java.util.Set<T> set,
                                          java.util.Set<T> list)

Check if there is an intersection between the set and the list.

Type Parameters:

T - Type of the objects in set or list.

Parameters:

set - A given set.

list - A given list.

Returns:

True if there is an intersection. False otherwise.

printWithIndent

public static void printWithIndent(int indent,
                                   java.lang.String value)

Print a string with a specified indentation at the beginning.

Parameters:

indent - Number of spaces to indent.

value - Text value to be printed.

countOccurrences

public static int countOccurrences(java.lang.String source,
                                   java.lang.String pattern)

Count the number of occurrences of pattern in source string. Case insensitive.

Parameters:

source - String in which the pattern is search for.

pattern - Pattern to be found.

Returns:

Number of occurrences.