Difference between abstract class and interface in java

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Key Differences: • Multiple Inheritance: Abstract classes do not support multiple inheritance, while interfaces do. This means a class can implement multiple interfaces but can only extend one abstract class. • Default Implementation: Abstract classes can provide default implementations for some of their methods. Interfaces can also do this using the default keyword (from Java 8 onwards). • Fields: Abstract classes can have fields with any access modifier and can maintain state. Interfaces can only have public, static, and final fields (constants) and cannot maintain state. • Constructors: Abstract classes can have constructors, which are called when an instance of a subclass is created. Interfaces cannot have constructors. • Access Modifiers: Methods in abstract classes can have any access modifier. Methods in interfaces are implicitly public, and from Java 9, interfaces can also have private methods. • Inheritance Keyword: Abstract classes use extends for inheritance, whereas interfaces use implements for implementation. • #java #springboot #SQL #coder #java #javaprogram #developer #It #NonIt #javainterviewprepration #javabasics #programming #codinglife #softwaredeveloper #corejava #advancedjava #array #string #collections • #Javaprogramming • #interviewtips • #geeksforgeeks • #Javatpoint • #durga • #ashok • hub • #leetcode • #hackerrank • ameerpeth #hyd #TechTips • Satya tech • #IT core Java spring • #Trending technology • Java interview questions and answer rogersoft giri • Tutorial point javatpoint • #JavaProgramming • #JavaDevelopment • #LearnJava • #JavaTutorial • #JavaForBeginners • #JavaProjects • #JavaCode • #JavaTips • #JavaCourse • #javaonlinetraining • Why we use interface in java • how to use interface in java • types of interface in java • core java tutorial for testers • rest api automation framework using java • java framework tutorial for beginners • java for beginners • crud operation in java • Java basic question • Java learning channel • Java interview question and answer in one video • java basic programs • best video for learning java • java course for beginners • java practice programs for beginners • best video for learning java • java important question • java coding best practices • top 10 java interview question • java interview question and answer learn coding

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