From builder.com: “Manipulate expressions with the new features of java.lang.String”<\/p>\n
“The Java String class has remained largely unchanged since JDK 1.0, Regular expressions have arrived with much fanfare in JDK 1.4, but the The String.matches(String)<\/a> method returns true if the current String “Music”.matches(“M.*”) returns true while The String.replaceFirst(String, String)<\/a> method replaces the first “Small angry, angry kittens”.replaceFirst(“angry”, “fluffy”)<\/p>\n will give us:<\/p>\n “Small fluffy, angry kittens”.<\/p>\n We also have the replaceAll method, which is exactly the same except “Small fluffy, fluffy kittens”.<\/p>\n The first argument to a replace method is a regular expression, while Lastly, we have the String.split(String) method, which turns a String String csv = “one,two, three,four, five”; The argument may be a regular expression, which allows the code in this The addition of regular expressions to Java is a long-awaited affair, From builder.com: “Manipulate expressions with the new features of java.lang.String” “The Java String class has remained largely unchanged since JDK 1.0, receiving only a minor addition of new methods with JDK 1.2. However, there have been some major additions in JDK 1.4. Regular expressions have arrived with much fanfare in JDK 1.4, but the melding … Continue reading Manipulate expressions with the new features of java.lang.String<\/span>
\nreceiving only a minor addition of new methods with JDK 1.2. However, there
\nhave been some major additions in JDK 1.4<\/a>.<\/p>\n
\nmelding of the java.lang.String<\/a> class to the java.util.regexp<\/a> package has
\nbeen less talked about. Four new regexp-based methods have arrived, with
\ntheir various overloads, to help enhance the String class.<\/p>\n
\nmatches a given regular expression. For example:<\/p>\n
\n“Noise”.matches(“M.*”) returns false.<\/p>\n
\ninstance of a regular expression with a replacement value and returns the
\nnew
\nversion of the String. For example:<\/p>\n
\nthat it will replace all the values. So we get:<\/p>\n
\nthe second argument is the replacement value. This replacement value may
\ncontain references to captured values.<\/p>\n
\ninto an array of Strings, based on a common delimiter. The following code
\nshows how to split a line of comma-separated values:<\/p>\n
\n String[] fields = csv.split(“,\\s*”);<\/p>\n
\ninstance to ignore the white space characters.<\/p>\n
\nbut the new helper methods in java.lang.String are an added bonus that
\nshould reduce the regular expression learning curve.”<\/p>\n","protected":false},"excerpt":{"rendered":"