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Get started with spring 5 and spring boot 2, through the learn spring course: >> check out the course if you have a few years of experience in the java ecosystem, and you're interested in sharing that experience with the community (and getting paid for your work of course), have a look at the "write for us" page . Spring boot: spring is a framework that makes our life easy to develop these java based applications. spring boot makes it easy to create stand alone, production grade spring based applications. Get started with spring 5 and spring boot 2, through the learn spring course: >> check out the course if you have a few years of experience in the java ecosystem, and you're interested in sharing that experience with the community (and getting paid for your work of course), have a look at the "write for us" page . Collections in java. any group of individual objects which are represented as a single unit is known as the collection of the objects. in java, a separate framework named the “collection framework” has been defined in jdk 1.2 which holds all the collection classes and interface in it. 4. java 8 collections. java 8 was a major release which introduced lambda style of programming in java. collections classes was also improved as a result. for example, we can iterate over collections in single line and perform an action on all elements of collection using foreach statement.
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Question 7: lets say you have class employee as below: question 8: how hashmap works in java. question 9: question 10: difference between comparator and comparable in java? in this post, i am going to share some of logical java collections interview questions which will help to understand collections concepts better. 16) how to connect spring boot application to database using jdbc? spring boot provides starter and libraries for connecting to our application with jdbc. here, we are creating an application which connects with mysql database. it includes the following steps to create and setup jdbc with spring boot. for more information click here. This tutorial explains the usage of the java collections, e.g. lists, arraylists and maps with java. 1. java collections. the java language supports arrays to store several objects. an array is initialized with an predefined size during instantiation. to support more flexible data structures the core java library provides the collection framework.
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