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Define the difference between StringBuffer and String class?
What is an abstract class? Abstract class must be extended/subclassed (to be useful). It serves as a template. A class that is abstract may not be instantiated (ie. you may not
Aspect-Oriented Programming (AOP) represents OOP (Object Oriented Programming) by giving the developer to dynamically change the static OO model to make a system that can
Each time an object is operated in Java, it goes into the area of memory named as heap. The Java heap is named the garbage collectable heap. The garbage collection may not be force
What is Arithmetic promotion assignment and casting? In an assignment statement, i.e. if there's an equals sign, Java compares the type of the left hand side to the at last typ
What are Commonsense Guidelines to prevent viruses? Discuss about Antivirus as well. Commonsense Guidelines to avoid viruses are as follows: 1. Do not open attachment of unwant
What is the difference between static and non-static variables? A static variable is associated with the class as a whole rather than with specific instances of a class. Non-st
Give the example of mixing data type in java? Mixing Data Types Order can form a difference while data types are mixed. For example, 1 / 2 * 3.5 = 0.0 3.5 * 1 / 2 = 1.75 3.5 /
create and initialize the two dimensional array called table Numbers of type integer. use nested loops that will add 12 to each element in an array. use nested loops that will get
JDBC stands for Java Database Connectivity: It is an API which gives easy connection to a wide range of databases. To connect to a database we have to load the appropriate dri
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A string buffer implements a variable sequence of characters. A string buffer is a String, and can be customized. At any point of time it contains some particular sequence of characters, but the length and content of the sequence can be changed through certain method calls. A String class represents character strings. All string literals in Java programs, as in "abc" are constant and implemented as instances of this class; their values cannot be changed after they are formed.
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