Beginning Java with WebSphere (Expert's Voice in Java)
Language: English
Pages: 556
ISBN: 1430263016
Format: PDF / Kindle (mobi) / ePub
Beginning Java with WebSphere provides a step-by-step guide for creating and installing both client- and server-based Java applications using Rapid Application Development v8, WebSphere Application Server 8.0, and Java.
Since more and more Java applications are moving to the server and using HTML for the user interface, there is a minimal amount of time spent exploring the Java GUI components. More specifically, this book covers graphical user interfaces using RAD's Visual Editor, variables, conditional logic, and application improvements/enhancements from the client side. And, from the server-side, this book covers servlets, JavaServer Pages (JSPs), database accessibility (JDBC), custom tags, and concludes with JavaServer Faces (JSFs).
This book concentrate on base topics that allow you to get to the server-side and database topics quickly.
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Change the constructor so that the setName method is invoked to assign the value to empName. 11. Format and save the Employee source code and verify there are no errors. In the getName method body, enter the following statement: return empName; The keyword return actually passes the variable (specified after the return keyword) to the class that invokes the getName method. In this case, the variable empName will be sent back. The executable statements should look like the following:.
System.out.println(Math.pow(doubleTest, intTest) * 3/2); 151 Chapter 5 ■ Variables doubleTest (2.0) is raised to the third (intTest) power, resulting in 8.0. 8.0 is multiplied by the int value 3, resulting in 24.0. Next 24.0 is divided by the int value 2. The 2 is promoted to a double (2.0), and the division result is 12.0. The second formula’s division (3/2) is in parentheses; therefore, it is performed first. System.out.println(Math.pow(doubleTest, intTest) * (3/2)); These are both.
TaxAmt = (taxSal – 150) * .15 + 12; There is actually another way that the formula can be specified. Can you figure it out? Here’s a debugging lesson that will save you a lot of time and aggravation in your programming future: if there is an error in a statement, then similar statements are highly likely to contain errors and should also be checked. In this case, it means you should review the other calculations for errors. Lo and behold, three of the other calculations are also wrong. 9.
Can do the same with Java code. Removing pieces of code will help you understand what function the code performs. In addition, producing errors highlights common programming mistakes and their associated error messages. Hopefully, by producing the errors now, you will recognize them sooner and fix them faster when you make them later. 1. In EmployeeApp, change the name of the main method to Main (capital M). 2. Click the Run drop down button and select the EmployeeApp configuration.
Popular C++ programming language. Java shares many of the same syntax rules and keywords as C++ but the major difference with Java is its network orientation. The Java language was designed so that graphical, two-way interactions between computing devices can be easily created. In the early 1990s, the Internet was primarily text-based. Sun, working with Netscape, enabled the Netscape browser to download Java applets from another computer (called a server). The applet ran on the user’s PC (known.