How to read excel, how can we read variable value without creating object, String split, String Reverse, window handling, frame handling, sting constant pool, constructor, java exception, overloading vs Overriding

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Answering questions related to Java programming concepts.

To read Excel, we can use Apache POI library
To read variable value without creating object, we can use static keyword
String split can be used to split a string into an array of substrings based on a delimiter
String reverse can be done using StringBuilder or StringBuffer class
Window handling can be done using WebDriver interface in Selenium
Frame handling can be done using switchTo() method in Selenium
String constant pool is a memory area in Java where String literals are stored
Constructor is a special method used to initialize objects
Java exception is an event that occurs during the execution of a program
Overloading is having multiple methods with the same name but different parameters
Overriding is having a method in a subclass with the same name and parameters as a method in the superclass

How to read excel, how can we read variable value without creating object, String split, String Reverse, window handling, frame handling, sting constant pool, constructor, java exception, overloading vs Overriding

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