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  • Java Object Oriented

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Java Interview Question 1

Java Interview Question for Java basics:

• What is the difference between JDK and JRE?
• What is Java Virtual Machine (JVM)?
• different types of memory areas allocated by JVM?
• What is JIT compiler?
• How Java platform is different from other platforms?
• Why Java is 'write once and run anywhere' language?
• How does ClassLoader work in Java?
• Is 'main' used for main method is a keyword
• Can we write main method as public void static instead of public static void?
• What is the default value for local variables?
• What is the default value for String array of arguments in Main method?
• What is the difference between byte and char data types in Java?
• Is it allowed to mark a method abstract as well as final?
• Can we instantiate an abstract class in Java?
• What is an interface in Java?
• Can you mark an interface method as static?
• Why an Interface cannot be marked as final in Java?
• What is a marker interface?
• What can we use instead of Marker interface?

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• Java Interview Question 1
• Java Interview Question What is the difference between JDK and JRE?
• Java Interview Question What is Java Virtual Machine (JVM)?
• Java Interview Question different types of memory areas allocated by JVM?