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What is a java object?
A java object is a collection of methods and properties defined in the Java programming language.
What does the 'this' reference do in Java?
Represents the current object (not usable in static methods).
What do you mean by this keyword in java?
"this" is a Java keyword that references the current object. Any part of the object(instance variables, methods, constructors) can be accessed by calling this.[member].
What are the different between'a' and ''a in java string methods?
The difference between 'a' and "a" anywhere in Java is that 'a' is a primitive char type, while "a" is a String object.
What is a new keyword in java methods?
new is a keyword to create a instance of object any class.
Why java is not a complete object oriented language?
Java is not a completely object oriented language, because not all values in Java are Objects. For example, the basic numeric types such as int, long, double, etc., are not objects and need to be "boxed" into objects in order to pass them as Object parameters or call methods on them.
Is it possible to override overloaded methods why?
Yes. Overloaded methods are also Java methods and all Java methods can be overridden.
What are methods and how are these related to an object?
Methods are functions defined for a class. Therefore they are accessible for all objects based on the class (depending on visibility; for example in Java: if they are public).
Why java know as true object oriented language?
Java is not a true object-oriented language.One of the requirements for such a title is that everything must be an object. Java contains non-object primitive values (such as int, float, boolean, etc.).
Explain three different methods in java?
There are three different methods /functions in java are there : 1)computational methods.2)manipulative methods.3)procedural methods.
How many methods does the Java built in class LinkedList have as standard?
According to the Java 1.6 API, LinkedList has: * 39 methods * 2 constructors * 28 methods inherited from superclasses and interfaces * ** 1 from AbstractSequentialList ** 5 from AbstractList ** 5 from AbstractCollection ** 7 from Object ** 9 from List ** 1 from Deque Which gives it a total of 69 methods.
What is string buffer in java?
StringBuffer is java class available in java.lang package which provides mutable String object where String is immutable class. The methods of this class like reverse(), append(),insert() gives facility to insert data of the same object.
