What is Java Container Class?
A class that is used to contain other java objects. They contain methods for adding and removing objects, as well as ways to iterate through them. They tend to differ mostly by how the objects are referenced (by key or no), by how fast their various methods execute, and by how much memory the container uses. Examples include: java.util.Vector java.util.Hashtable java.util.HashSet
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A class is the principle method of data encapsulation and structured programming in a program. The class, just like in C++ and many other Object Oriented programming languages…, contains its own constructor, encapsulated variables, and encapsulated methods/functions. In Java, all classes are descended from the Object class. Classes can extend other classes to inherit their public or protected member variables and methods. Java classes are expressed by the keywords "public class" in the source file, and each class is compiled into a .class Java bytecode file for the JVM to read.
Well, the Container extends Component, so ALL containers in Java are components. This includes classes like Panel, ScrollPane, Window, and JComponent. Plus all the various gen…erations of subclasses of each of those containers.
class is a blueprint which does not have its own existence but it can pass all of its feature to its child classes.
The rules of Java state that the top-level main class needs to be declared "public." The idea behind this is probably because if it was not declared "public," then it would ha…ve to be either "private" or "protected." Since these other two types of classes can only be used by classes of the same package (or more local), and thus a non-public main class could not be called from the outside.
You may know that static methods in Java are executed even before the constructor of that class are called. Similarly, since the main method is static it gets executed firs…t even before the others methods of the class are called. Since it is being called before the constructor, logically speaking you cannot have objects of that class.
Class in Java is a blueprint which is used to create objects in Java. Class contains both methods and variables and that's how it is different with C struct construct. in Java… there are built in classes like System Classes and you can also create class by using keyword "class" which we call user defined classes or application classes.
A package in java that contains a collection of classes that allow you to read and write to streams?
java class is a template for object you are going to create it is blue print by using this we can create a class
From the Object class. From the Object class. From the Object class. From the Object class.
Password inherits from which one of the following classes?
What does a Java Boolean type variable declared but not yet initialized contain when its class is instanciated?
If it is a class or instance variable, it gets the default value of false. If it is a local variable (inside a method), it doesn't have a value until you explicitly set one.…
yes,abstract class can have non abstract methods,even it can have all non abstract method
A java class file contains java classes.
A container is a generic term for an object that can contain other objects. It is not a type of object you can construct, and so therefore it is abstract. Specific instances o…f containers (such as Windows, Frames, and Panels) all share similar functionality, and so they all inherit from the container class so as to reduce the amount of code that had to be written, and allow each container to accept other containers and components without having to code for each specific container and component directly.
Yes, it can. However, there can only be one public class per .java file, as public classes must have the same name as the source file.