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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
Why there is a need to use primary key in database ? Primary key is a constraint basically used in datdabase to uniquely identify the records in the database.
Explain the term- Comparing Strings For comparing Strings never use == operator, use equals method of String class. - == operator compares addresses (shallow comparison) whi
The Applet's life cycle functions are as follows: public void init() : Initialization function called only once by the browser. public void start() : Method called after
Don''t know how to write this...can anyone help me?
How can I convert Dijkstra''s algorithm to do max flow instead of min flow, and how can I implement it into Ford Fulkerson algorithm?
This exercise will give you some introductory exposure to network programming with sockets. Your task is to demonstrate a minimal server program and client program that can send on
JavaServer Faces (JSF) framework : JavaServer Faces is a new framework for creating Web applications using Java. JSF gives you with the following main features: Basic us
write a program in java which enters name,roll #,and shows the sum of students english and maths marks?
For this assignment we will be solving the producer-consumer problem with a bounded buffer. You are required to implement this assignment in Java. There are three components in thi
JMS ((java messaging service))is an acronym used for Java Messaging Service. It is Java's answer to formed software using asynchronous messaging. It is one of the official specific
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