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1. DECLARE A VARIABLE MYAPPLE OF CLASS APPLE JAVA SOFTWARE
2. DECLARE A VARIABLE MYAPPLE OF CLASS APPLE JAVA CODE

Date class has even become obsolete and java docs suggest to use Calendar class instead of Date class. Reasons were many such as hard to understand, hard to use and not flexible. Try Ī big part of developer community has been complaining about Date and Calendar classes.

DECLARE A VARIABLE MYAPPLE OF CLASS APPLE JAVA CODE

Code within a try/catch block is referred to as protected code.A try/catch block is placed around the code that might generate an exception.With the help of try/catch block we are able to catch exceptions.

Runtime exceptions are ignored at the time of compilation. These include programming bugs, such as logic errors or improper use of an API. Unchecked exceptions: An unchecked exception is an exception that occurs at the time of execution, also known as runtime exceptions.These exceptions cannot simply be ignored, the programmer should take care of (handle) these exceptions. Checked exceptions: A checked exception is an exception that is checked (notified) by the compiler at compilation-times, also known as compile time exceptions.Some of these exceptions are caused by user error, others by programmer error, and others by physical resources that have failed in some manner. When an Exception occurs the normal flow of the program is disrupted and the program/Application terminates abnormally, which is not recommended, therefore, these exceptions are to be handled. High performance: With Just-In-Time (JIT) compilers, Java enables high performance.Īn exception (or exceptional event) is a problem that arises during the execution of a program.Interpreted: Java byte code is translated (by JVM) on the fly to native machine instructions.Simple: Java is a high-level programming language and is closer to the human language.The byte code is interpreted by the Java Virtual Machine (JVM) on whichever platform it’s being run on. Platform independent: Java is compiled into a platform independent byte code (unlike C and C++).Except of the primitive data types, everything is a object. Object oriented: Java is a true object oriented programming language.Please let me know if the guide has any incorrect/missing information. You can find references at the end of the guide. Java 8 Features (Functional Interface, Lambda Expressions, Default methods, Streams, Optional, Collections, DateTime API).The Relation between Overriding, Upcasting, Overloading, Runtime Polymorphism and Interfaces?.

DECLARE A VARIABLE MYAPPLE OF CLASS APPLE JAVA SOFTWARE

If you’re new to software development or looking for a resource to quickly review topics for interview prep, you’re in the right place. Then I prepared one which benefited me a lot.Ī quick update, I’ve just published changes of Java 11 in a Nutshell. When I first started my software engineering career, I was looking for an all-in-one Java guide but I couldn’t have found it. You can find easily digestable information on almost all the topics of Java. Hello, welcome to this ‘panaromic’ Java guide.