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Each time an object is started in Java it goes into the area of memory named as heap. The primitive variables like double and int are allocated in the stack, if they are local instances and in the heap if they are member variables. In Java functions and local variables are pushed into stack when a function is called and stack pointer is decremented when a method invoke is finished. In a multi-threaded application each thread may have its own stack but will share the similar heap. That is why care could be taken in your code to avoid any concurrent access concern in the heap space. The stack is thread-safe because each and every thread will have its own stack with say 1MB RAM allocated for each thread but the heap is not thread-safe unless protected with synchronization through your code. The stack space may be increased with the -Xss option.
All Java functions are automatically re-entrant. It states that various threads can be executing the same method at once, each with its own copy of the local instance. A Java method can call itself without using any special declarations. That is known as a recursive method call. Provided enough stack space, recursive method calls are completely perfect and valid in Java though it is tough to debug
What is Alternate Text ? The APPLET element can have an ALT attribute. An ALT attribute is used through a browser which understands the APPLET tag but for some purpose cannot
Explain the equals() method The equals() method of java.lang.Object acts the similar as the == operator; that is, it tests for object identity rather than object equality. The
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Data integrity helps to make sure if something is communicate and not tampered with in the mean while when transmission take place. Checksums: Simply inserts the bytes withi
What is the role of hub in networks? The network traffic controller - elements of convential computer networks. Hub is used to link the different computers within the network i
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There is no separate homework this week, but you may complete the exercises ahead of time, in which case you only need to attend for long enough to get your work marked off by your
Give an example of Class or static Members? Below is a Car class along with such a speedLimit field and getSpeedLimit() method. public class Car { private String licensePla
State the significance of public, private, protected, default modifiers both singly and in combination and state the effect of package relationships on declared items qualified by
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