What is hardest part in Java?

What is hardest part in Java?

Generics are definitely one of the more difficult parts of the Java language to understand. I’m still puzzling to get all the generics right sometimes. Using classes or methods with type parameters is not that hard, but writing your own classes or methods with type parameters can become quite a puzzle.

What are the Java programs asked in interviews?

Java programs are frequently asked in the interview. These programs can be asked from control statements, array, string, oops etc. Java basic programs like fibonacci series, prime numbers, factorial numbers and palindrome numbers are frequently asked in the interviews and exams.

What are the trickiest Java questions?

10 Tricky Java interview question – Answered

• Question: What does the following Java program print?
• What will happen if you put the return statement or System.
• Question: Can you override a private or static method in Java?
• Question: What do the expression 1.0 / 0.0 will return? will it throw Exception?

What is hard about Java?

Java is not easy or hard. It’s a language where logic is used. Many beginners had problem in concepts of java but once you start programming and playing with it’s GUI features you will love java. Java is a strong language which run fast and supports almost all platforms like windows, Linux, mac.

Why are pointers not used in Java?

So overall Java doesn’t have pointers (in the C/C++ sense) because it doesn’t need them for general purpose OOP programming. Furthermore, adding pointers to Java would undermine security and robustness and make the language more complex.

How can we avoid deadlock in Java?

How can we avoid a deadlock in Java?

1. Avoid Nested Locks: A deadlock mainly happens when we give locks to multiple threads. Avoid giving a lock to multiple threads if we already have given to one.
2. Avoid Unnecessary Locks: We can have a lock only those members which are required.
3. Using Thread.

Why Java is not object oriented?

Java is not fully object oriented because it supports primitive data type like it,byte,long etc.,which are not objects. Because in JAVA we use data types like int, float, double etc which are not object oriented, and of course is what opposite of OOP is. That is why JAVA is not 100% objected oriented.

Is core Java tough?

What are the toughest interview questions in Java?

Most of the tough questions I faced on programming interviews are from Data Structure and algorithm. Only difficulty arise on complex Java topics like classloaders, socket programming and multithreading. Since, no body ask question from Swing or AWT, those are useless topics to prepare for Java interviews. Nice Blog…

Why does the Java output say ” Java “?

Reason: “java” would be printed if String literals (in double quotes) are used, but in the question since character literals has been used, these won’t be concatenated. Therefore After execution of the program, an addition of each equivalent ASCII (Unicode) value of the character will be obtained.

What do you need to know about Java fundamentals?

See Java Fundamentals: The Core Platform to learn more about PATH, Classpath, and other Java environment variable. hint: Overriding happens at subclass while overloading happens in the same class. Also, overriding is a runtime activity while overloading is resolved at compile time.

What kind of language does Java compile to?

Java compiles to a bytecode, the intermediate language between source code and machine code. This bytecode doesn’t platformed specific and hence often fed to any platform. Q.4 How to restart a Dead Thread Be?