Archive for: September, 2014

A Closer Look at new

A Closer Look at new Here, class-var is a variable of the class type being created. The class name is the name of the class that is being instantiated. The class name followed by parentheses specifies the constructor for the class. A constructor defines what occurs when an object of a class is created. Constructors are an important…

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Declaring Objects

Declaring Objects As just explained, when you create a class. you are creating a new data type. You can use this type to declare objects of that type. However, obtaining objects of a class is a two-step process. First, you must declare a variable of the class type. This variable does not define an object. Instead,…

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A Simple Class

A Simple Class Let’s begin or study of the class with a simple example. Here is a ‘class called Box that defines three instance variables: width,  eight, and depth. Currently, Box docs not contain any methods (but some will be added soon).After this statement executes, my box will be an instance of Box. Thus, it will have…

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The Complete Reference

The Complete Reference The class is at the core of java.It is the logical construct upon which the entire Java language is built because it defines the shape and nature of an object. As such, the class forms the basis’ for object-oriented programming in Java. Any concept .you wish to implement in a Java program must be…

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Using break as a Form of Go to

Using break as a Form of Go to In addition to its uses with the switch statement and loops, the break statement can also be employed by itself to provide a “civilized” form of the go to statement. Java does not have a go to statement, because it provides a way to branch in an…

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Nested Loops

Nested Loops Like all other programming languages, Java allows loops to be nested. That is, one loop may be inside.another. For example, here is a program that. nests for loops Java supports three jump statements: break, continue, and return. These statements transfer contralto another part of your program. Each is examined heu. addition to the jump statements discussed…

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Iteration Statements

Iteration Statements Java’s iteration statements are for, while, and do-while. These statements create what we commonly call/oops. As you probably know, a loop repeatedly executes the same set of instructions until a termination condition is met. As you will see, Java has a loop to fit any programming need. while The while loop is Java’s most fundamental looping…

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Some for Loop Variations

Some for Loop Variations The for loop  a number of variations that increase its power and applicability. The reason it is so flexible is’that its three parts, the initialization, the conditional test, and the iteration, do not need to be used for only those purposes. In facl, the three. sections of the for can be used for you…

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The Java Thread model

The Java Thread model The Java run-time system depends on threads for many things, and’ all the class libraries are-designed with multithreading in mind. In fact, Java uses threads to enable the entire environment to be asynchronous. This helps reduce inefficiency by preventing the waste of Cl’U cycles. . The value of a multithreaded environment is best understood in…

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Thread Priorities

Thread Priorities Java assigns to each thread a priority that determines how that thread should be treated with respect to the others. Thread priorities are integers that specify the relative priority of one thread to another. As an absolute value, a-priority is meaningless higher-priority thread doesn’t flm-any faster than a lower-priority thread Wit is the only thread running. Instead,…

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