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Java Strings

In Java, primitive data type char stores one character. To store text which contains more than one character, Java provides String class.

Java Primitive Wrapper Classes

Java provides wrapper classes which represent primitive data types. Primitive data type wrapper classes allow primitive data types to be used with collections.

Inheritance in Java

In Java, a class can be created by using another related class so that the fields and methods of the other class can be available in the new class without repeating the field and method declarations.

Java Interfaces

Java interfaces allow you to decouple class implementation from its interface which the calling programs use to communicate with them, so that various implementations can be created and used without worrying about the calling programs.

Java Annotations

Annotations are part of program elements and provide information about the program without changing any behavior or data of the program.

Java Enums

Java enum allow you to define a data type which contains a fixed set of constant values. The variable of enum data type can be assigned only one of the valued defined in the enum declaration.

Java Lambda Expressions

Lambda expressions allow you to create functions and pass them as arguments to methods. Lambda expressions are introduced in Java 8.

Java Nested Classes Tutorial

Like fields and methods, you can define a class inside a class. The classes which are declared inside a class are called nested classes.

Java classes and Objects

Java is an object oriented programming language. When you create an application in java, you create classes. Classes contain fields (data) and methods (behavior).

Introduction to Java Programming

Java is a powerful object oriented programming language. Java programs are translated into bytecode by java compilers. The compiled java bytecode runs on the virtual computer called Java Virtual Machine (JVM).

Android Instant Apps Tutorial

Android instant apps feature allows you to create apps in such a way that features of the app can be used on the device without installing complete app with all the features.

Android Job Scheduler Example

For scheduling background tasks, Android provides JobScheduler. It allows you to specify conditions for running work.