The enums are considered data types that create constants to be used with variables. These are implemented using the enum keyword of Java
The constructors in Java initialize the objects created and referred to as the block of code that is similar to the method except it doesn’t return a value
The string equals() method compares the characters in two strings and prints the value as true if the strings are equal otherwise false
The Java string format() outputs the formatted string when declared with its specifiers. It consists of certain specifiers which are used according to the need
The Regular Expression in Java is used for manipulating, searching, and editing the strings. These expressions are implemented using java.util.regex package
To create a circle in Java there are various functions available. These are the fillOval() function, the drawRoundRect() function, and the draw() function
To determine the length or size of an array in Java, several functions, such as length(), size(), Collection.size(), length(), and the Stream API can be used.
To create a HashMap in Java a key is declared and the value is specified to that key. To retrieve the data the key is passed and the value is returned accordingly