C++2007-09-09
Constructors and Destructors in C++
Classes have a special member function called a constructor. The constructor can take parameters as needed, but it cannot have a return value--not even void. The constructor is a c
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C++2007-09-09
class keyword in C++
You use the class keyword to declare new types. A class is a collection of class member data, which are variables of various types, including other classes. The class also contains
Read tutorialC++2007-09-09
Public versus Private members in C++
All members of a class--data and methods--are private by default. Private members can be accessed only within methods of the class itself. Public members can be accessed through an
Read tutorialC++2007-09-09
Tutorial on Classes and Members in C++
One way to think about a car is as a collection of wheels, doors, seats, windows, and so forth. Another way is to think about what a car can do: It can move, speed up, slow down, s
Read tutorialJava2007-09-08
readLine() to read strings from console input
To read a string from the keyboard, use the version of readLine() that is a member of the BufferedReader class. Its general form is shown here:
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Using read() to read one character at a time from console input
Each time that read() is called, it reads a character from the input stream and returns it as an integer value. It returns –1 when the end of the stream is encountered.
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Java2007-09-08
What is a deadlock and how to avoid it in Java
A special type of error that you need to avoid that relates specifically to multitasking is deadlock, which occurs when two threads have a circular dependency on a pair of synchron
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wait(), notify() and notifyAll() in Java - A tutorial
To avoid polling, Java includes an elegant interrocess communication mechanism via the wait(), notify(), and notifyAll() methods. These methods are implemented as final methods in
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call() and synchronized keyword - When and how to use in Java
Synchronization is easy in Java, because all objects have their own implicit monitor associated with them. To enter an object's monitor, just call a method that has been modified w
Read tutorialJ2ME2007-09-08
A sample J2ME midlet that shows an example of using a Timer and a TimerTask.
This MIDlet creates two gauges. One gauge gaugeOne sets elements from low to high. The other, gaugeTwo set elements from high to low. In effect, this has gaugeOne "going up", and g
Read tutorialJ2ME2007-09-08
Sample J2ME code that shows various functionality of RMS.
The general flow of this MIDlet is In the constructor (See RMSMIDlet), create and populate two record stores, one of personal contacts, the other with business contacts. Display th
Read tutorialJava2007-09-08
setPriority() and getPriority() in Java
Thread priorities are used by the thread scheduler to decide when each thread should be allowed to run. In theory, higher-priority threads get more CPU time than lower-priority thr
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