Beginning JSP™, JSF™ and Tomcat Web Development: From Novice by Giulio Zambon

By Giulio Zambon

Because the majority of Java builders are just Web-tier builders; Java applied sciences like JavaServer Pages (JSP), JavaServer Faces (JSF), and Apache Tomcat are generally acceptable and suitable to their wishes. starting JSP, JSF and Tomcat: From beginner to expert is the 1st and even perhaps in simple terms starting point ebook of its style combining the certainly complimentary JSP, JSF and Tomcat net applied sciences into one consolidated remedy for builders concentrating on simply Java internet software improvement and deployment. This ebook is examples-driven utilizing a realistic, real-work e-commerce case learn and situation all through e-book.

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The user starts by accessing http://your-web-site/eshop/shop and sees the welcoming page with a left-side menu containing a search box and a list of book categories. 2. The user either types a word in the search box and hits the Search button or selects a book category. 3. The user selects one of the books by clicking on the corresponding Details link. The application then shows the user a page with an image of the front cover of the book and all the information available in the database about the book.

Be careful with that! You can assign objects to variables of other types, but only if the type of the variable is a superclass of the class from which the object was instantiated. As with primitive data types, you can typecast a value of a superclass into a variable of a subclass type. Comparison operators are straightforward when applied to primitive data types. ” Nothing surprising there. substring(0,3); boolean b1 = (s1 == "abc"); // parentheses not needed but nice! boolean b2 = (s1 == s2); boolean b3 = (s1 == s3); As perhaps you expected, b1 and b2 turn out to be true, but b3 is false, although s3 was set to "abc"!

Break; case (10): ... break; default: ... break; } At the very least, you’ll calculate the expression only once. Note that if you omit a break, execution continues to the following case. Iterations This statement repeatedly executes the statements with increasing values of k, beginning from initial-value: for (int k = initial-value; k < limit; k++) { statements; } The general format is: for (initial-assignment; end-condition; iteration-expression) { statements; } The initial-assignment is executed only once, before entering the loop.

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