THE TUTORIAL LIBRARY
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 tutorialThis 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 tutorialThe 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 tutorialThread 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
Read tutorialThe main thread must be the last thread to finish. Sometimes this is accomplished by calling sleep() within main(), with a long enough delay to ensure that all child threads termin
Read tutorialThe easiest way to create a thread is to create a class that implements the Runnable interface. The second way to create a thread is to create a new class that extends Thread, and
Read tutorialThe easiest way to create a thread is to create a class that implements the Runnable interface. Runnable abstracts a unit of executable code. You can construct a thread on any obje
Read tutorialWhen a Java program starts up, one thread begins running immediately. This is usually called the main thread of your program, because it is the one that is executed when your progr
Read tutorialUnlike most other computer languages, Java provides built-in support for multithreaded programming. A multithreaded program contains two or more parts that can run concurrently. Ea
Read tutorialWhen exceptions are thrown, execution in a method takes a rather abrupt, nonlinear path that alters the normal flow through the method. Depending upon how the method is coded, it i
Read tutorialIf a method is capable of causing an exception that it does not handle, it must specify this behavior so that callers of the method can guard themselves against that exception. You
Read tutorialIt is possible for your program to throw an exception explicitly, using the throw statement. The general form of throw is shown here:
Read tutorialOne example today. A better developer tomorrow.