What is Map Map is an Interface.In map data is stored in key-value format. A map can not contain duplicate Key.We use map if we want to store,update and fetch data on the basis of key. For Example: -A map of country and capital -A map of cities and zip code -A map of environment variable
Read moreTo perform text file operation like Create File, Compare Text file, Replace words etc we have created jar which you can download Attached Zip File: TextUtility After extracting zip file you will get jar file which contains below functionality which is extremely easy to use. Functions appendLine → Read Text File and append new
Read moreTo connect MS SQL database using jdbc driver in java, we need to download jdbc driver for MS SQL server. Refer below link to download MS SQL jdbc driver file. Add external Jar file to project: Right click on project, Go to properties → Java Build Path → Click on Library tab Add external
Read moreHow to read write data in notepad file using selenium? Below is Selenium code to perform read and write operation in notepad file. [crayon-676581c42d2d8793847876/] Main class to execute read and write function from above class [crayon-676581c42d2db217864807/]
Read moreThis code will compare pixel from base image with other image. If both pixel at location (x,y) are same then add same pixel in result image without change. Otherwise it modifies that pixel and add to our result image. In case of baseline image height or width is larger than other image
Read moreWhat is method overloading in Java?If two or more methods in a class have same name but different parameters, it is known as method overloading. Method overloading is one of the ways through which java supports polymorphism. Method overloading can be done by changing number of arguments or by changing
Read moreMethod overloading with type promotion:One type is promoted to another implicitly if no matching datatype is found. Let's understand the concept by the figure given below: Example: Method Overloading with Type Promotion[crayon-676581c42d721417247113/][crayon-676581c42d726892143193/]If there are matching type arguments in the method, type promotion is not performed:Example: Method Overloading with Type Promotion if
Read moreWhat is method overriding?If a subclass (child class) has the same method as declared in the parent class, it is known as method overriding in java.In other words, if a subclass provides the specific implementation of the method that has been provided by one of its parent class, it is
Read moreReal example of Java Method Overriding:-Consider a scenario, Bank is a class that provides functionality to get rate of interest. But, rate of interest varies according to banks. For example, SBI, ICICI and AXIS banks could provide 5%, 6% and 7% rate of interest. [crayon-676581c42dab3381554818/] [crayon-676581c42dab7638137397/]Advantages of method overridingThe main advantage of
Read moreRules of method overriding in JavaArgument list: The argument list of overriding method must be same as that of the method in parent class (overridden). The data types of the arguments and their sequence should be maintained as it is in the overriding method.Access Modifier: The Access Modifier of the
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