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Reflection is a runtime API for inspecting and modifying the behavior of methods, classes, and interfaces. The classes required for reflection are provided in the java.lang.reflect package, which is required to understand reflection. Reflection informs us about the class to which an object belongs, as well as the methods of that class that can be […]
August 29, 2022 | Java | No comments
In java.lang package, Java includes a wrapper class called Character. A single field of type char is contained in a Character object. The Character class provides several useful static (class) methods for manipulating characters. The Character constructor can be used to create a Character object. Constructor of Character wrapper class: Methods of Character Wrapper class: Methods […]
August 27, 2022 | Java | No comments
In java.lang package, there is a wrapper class Boolean. A value of the primitive type boolean is wrapped in an object by the Boolean class. An object of type Boolean has a single field with the type boolean. Constructors for creating Boolean object: Methods of Boolean Wrapper class: Methods Description boolean booleanValue() Returns a primitive boolean […]
August 27, 2022 | Java | No comments
The Double class is a wrapper class for the primitive type double. It contains several methods for dealing with double values effectively, such as converting them to string representations and vice versa. A Double object can only hold one double value. Constructor of Double wrapper class: There are mainly two constructors to initialize a Double-object […]
August 27, 2022 | Java | No comments
The Float class is a wrapper class for the primitive type float. It contains several methods for dealing with float values effectively, such as converting them to string representations and vice versa. A Float object can only hold one float value. Constructor of float wrapper class: There are mainly two constructors to initialize a Float […]
August 27, 2022 | Java | No comments
The Short class is a wrapper class for the primitive type short. It contains several methods for dealing with short values effectively, such as converting them to string representations and vice versa. Constructors: To initialize a Short object, there are primarily two constructors- Methods of Short wrapper class: Methods Description int compareTo(Long b) -If the invoked […]
August 27, 2022 | Java | No comments
The Byte class creates an object out of a primitive type byte value. An object of type Byte has a single field of type byte. SignedBytes and UnsignedBytes are the methods that specifically treat bytes as signed or unsigned. Byte wrapper class Constructor: Methods of Byte class: Method Description static Byte valueOf() This method returns […]
August 21, 2022 | Java | No comments
A Wrapper class is one whose object contains or wraps primitive data types. When we create an object for a wrapper class, it has a field where we can store primitive data types. To put it another way, we can turn a primitive value into a wrapper class object. Wrapper Classes Are Required : They […]
August 20, 2022 | Java | No comments
Java JTable: The JTable class is used to display tabular data. It is made up of rows and columns. Constructors: Java JList: The JList class object represents a list of text items. The list of text items can be configured so that the user can select one or more items. It derives from the JComponent […]
August 19, 2022 | Java | No comments
Containers are essential SWING GUI components. A container is a space in which a component can be placed. A Container in AWT is a component in and of itself, with the ability to add another component to it. Containers at the highest level: It inherits AWT’s Component and Container. It can’t be contained by anything […]
August 17, 2022 | Java | No comments