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What is polymorphism in Java? Polymorphism is the ability of a program to identically use objects with the same interface without knowing the specific

What is encapsulation in Java? This question comes up a lot in Java developer interviews. Encapsulation is hiding the implementation with access modifiers

What is inheritance in Java? Answer Inheritance means that one class can inherit (“extends”) another class. Thus, you can reuse the code from the class

What are the features of Java? Answer: OOP concepts: object-oriented; inheritance; encapsulation; polymorphism; abstract. Cross-platform: A Java program

When I execute some code, a NullReferenceException is thrown with the following message: Object reference not set to an instance of an object.

The directory separator in Unix operating systems is a slash (right direction) – an example is /. The directory separator in the Windows operating

Fiddler is a handy tool which sits between two applications act as a proxy. It includes the ability to view, decrypt HTTP or HTTPS  traffic for debugging proposes.

To write the text message to a file in ant, you can use ant target echo, it provides the way to directly append to an existing file or write to the new file.

The below target print_classpath in build xml demonstrates how to print the project classpath in ant script, this gives the ability to check loaded classpath at runtime.

The Ant verbose option can give you the information about what Ant is doing. you can turn on the verbose flag to debug the ant script: How to do?