latest interview questions on core java in java

The Class class is used to obtain information about an object’s design. To obtain design information about an object in Core Java, you would typically use the Class class. The Class class is part of the Java Reflection API and provides methods to get information about the class, such as its name, superclass, implemented interfaces, constructors, methods, … Read more

The eight primitive types are byte, char, short, int, long, float, double, and boolean. In Java, there are eight primitive data types, and they can be categorized into two groups: numeric and non-numeric. Numeric Data Types: byte: 8-bit signed integer short: 16-bit signed integer int: 32-bit signed integer long: 64-bit signed integer float: 32-bit floating-point number double: 64-bit floating-point number Non-Numeric Data Types: … Read more

No. It is not a valid java operator. No, &&= is not a valid Java operator. In Java, there is no &&= operator. The && operator is used for logical AND operations, but it is not combined with the assignment operator = in this manner. Valid examples of logical AND in Java include: java boolean … Read more

The elements of a CardLayout are stacked, one on top of the other, like a deck of cards. In Core Java, the elements of a CardLayout are organized in a stack-like fashion, where only one card is visible at a time. It’s like dealing a deck of cards where only the top card is visible, and you … Read more

setEditable(). In Core Java, the correct method to set a TextComponent (such as a TextField or TextArea) to the read-only state is setEditable(boolean). The setEditable(boolean) method allows you to control whether the text component is editable or not. If you pass false as an argument, it makes the text component read-only, preventing the user from … Read more