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Download e-book for kindle: Groovy Programming: An Introduction for Java Developers by Kenneth Barclay, John Savage

By Kenneth Barclay, John Savage

ISBN-10: 0123725070

ISBN-13: 9780123725073

Groovy Programming: An advent for Java DevelopersKenneth Barclay and John Savage"For a ebook focusing on these new to scripting, OO or dynamic languages mostly, this ebook is fabulous!"- Andrew Glover, President, Stelligent IncorporatedGroovy is a distinct scripting language designed to reinforce the Java platform. It bargains Java-like syntax, local aid for maps and lists, tools, sessions, closures, and developers. With its dynamic vulnerable typing and seamless entry to the Java API, it truly is compatible to the improvement of many small- to medium-size applications.Groovy is extra expressive and operates at greater degrees of abstraction than Java. This ends up in extra swift software improvement and elevated programmer productiveness. it may be used for "gluing" purposes jointly instead of enforcing advanced info constructions and algorithms. one other significant power of Groovy is that the coding attempt required is comparatively small through comparability with code written in Java. frequently the latter seems to be overly complicated and hard to appreciate and hold. the reason is, it calls for broad boilerplate or conversion code no longer required via Groovy.In one of many first publications to Groovy, authors Kenneth Barclay and John Savage introduce all of the significant facets of Groovy improvement and clarify the dynamic good points this cutting edge programming language brings to the Java platform. This ebook assumes just a normal wisdom of Java programming. even if a pro Java developer or new to scripting languages, you will obtain specialist tips on find out how to make Groovy give you the results you want.

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5. intdiv(2)] where there is (i) an odd number of items in the list and (ii) where there is an even number of items. 6. sort() 7. Is the map names = [‘Ken’ : ‘Barclay’, ‘John’ : ‘Savage’, ‘Ken’ : ‘Chisholm’] a valid construction in Groovy? Ken deliver? 8. intersect(divisors[12]) 9. A software house is contracted to develop Groovy, Java, and C# projects. Each project has one or more programmers involved, perhaps with the same individual associated with more than one project. 6 exercises Prepare expressions to answer the following: (a) How many staff members involved with the Groovy project?

Appendix B describes how Groovy augments the classes of the Java Development Kit ( JDK) by including additional methods. html). html). 2 with an asterisk. 2 Name String methods Signature/description * center String center(Number numberOfChars) Returns a new String of length numberOfChars consisting of the recipient padded on the left and right with space characters. * center String center(Number numberOfChars, String padding) Returns a new String of length numberOfChars consisting of the recipient padded on the left and right with padding characters.

Often, we find it useful to have these as a List. 5 ranges A range is shorthand for specifying a sequence of values. A Range is denoted by the first and last values in the sequence, and Range can be inclusive or exclusive. An inclusive Range includes all the values from the first to the last, while an exclusive Range includes all values except the last. < between the lower and upper bounds. The range can be denoted by Strings or by Integers. As shown, the Range can be given either in ascending order or in descending order.

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