Download Agile Java: Crafting Code with Test-Driven Development by Jeff Langr PDF

By Jeff Langr

Grasp Java 5.0, object-oriented layout, and Test-Driven improvement (TDD) via studying them jointly. Agile Java weaves all 3 right into a unmarried coherent method of development specialist, strong software program platforms. Jeff Langr indicates precisely how Java and TDD combine during the whole improvement lifecycle, aiding you leverage ultra-modern quickest, most productive improvement ideas from the very outset.Langr writes for each programmer, even people with very little adventure with Java, object-oriented improvement, or agile tools. He exhibits easy methods to translate oral necessities into useful checks, after which how you can use these checks to create trustworthy, high-performance Java code that solves genuine difficulties. Agile Java does not simply train the middle gains of the Java language: it provides coded try examples for every of them. This TDD-centered strategy does not simply bring about higher code: it offers strong suggestions that can assist you study Java way more quickly. using TDD as a studying mechanism is a landmark departure from traditional instructing concepts.

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Extra resources for Agile Java: Crafting Code with Test-Driven Development

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TestRunner StudentTest 56 57 [11] For this to work, ensure that the checkbox labeled "Reload classes every run" is checked in the JUnit GUI. ane Doe> Sure enough, since getName always returns "Jane Doe", the second assertEquals statement fails. The problem is that you passed the student name to the constructor of the Student class, but the constructor does nothing with that name. Your code in the Student class is responsible for storing the name if anything is going to be able to refer to the name later.

It also tells you what went wrong in the first listbox: Failure: testCreate(StudentTest): expected: but was:<> The method failing is testCreate, located in the StudentTest class. The problem is that something expected the String literal "Jane Doe" but received instead an empty String. Who is expecting this and where? JUnit divulges this information in the second listbox, showing a walkback (also known as a stack trace) of the code that led up to the failure. java. Use your editor to navigate to line 5 of the StudentTest source code.

Java:4: ';' expected } ^ 1 error This specific error means that you forget to type the semicolon (;) at the end of the third line of text. You might see multiple errors, depending on what you mistyped. Correct any errors and try to compile the file again. If you still have problems, make sure your code looks exactly as it appears above. Finally, see the section Still Stuck? at the end of this chapter. class. class exists. class is the binary compiled version of the source codethe class file. java.

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