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Should I go for Java training at IBM?

Asked by Hrhrh 28/07/2022 Last Modified 25 Jan

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I want to know what are the differences between runnable and thread class implementation except they are class and interface and how to decide which is better at what time ...

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Why Operator Overloading in not allowed in JAVA?

Java does not support operator overloading by programmers. This is not the same as stating that Java does not need operator overloading. Operator overloading is syntactic sugar to express an operation...

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Which is true about an anonymous inner class? A. It can extend exactly one class and implement exactly one interface. B. It can extend exactly one class and can implement multiple interfaces. C. It can extend exactly one class or implement exactly one interface. D. It can implement multiple interfaces regardless of whether it also extends a class.

C It can extend exactly one class or implement exactly one interface

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Can u explain init() method is used in servlet for initialization then constructor also there for initializing variables.then what makes the difference between init() and default constructor in servlets?

Using init() only advisable than default constructor because we cannot initialize servlet using constructor because servlets are not directly instantiated by javacode, instead container create instance...

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What is reflection and what is its use in Java?

to inspect classes, interfaces, fields and methods at runtime, without knowing the names of the classes, methods etc. at compile time

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