Java does not need a sizeof( ) operator for this purpose, because all the data types are the same size on all machines.

Java arrays are safer than C&C++ arrays because of automatic initialization and range checking .

Java provides two classes to perform high-precision numbers operation are BigInteger and BigDecimal.

Know about primitive types in Java. Why primitive types are there in java. Size of primitive types in Java.

Every computer programs stores data while running and Java also stores data in memory. There are six places where java can store data while running.

There are five basic characteristics of Java. These characteristics represent a pure approach to object-oriented programming.

Java example for Files.createDirectories and Files.createDirectory methods to make folders.

Java files copy examples using java.nio.Files class copy methods for better performance.

Example of browser’s device type detection using DeviceResolver & LiteDeviceResolver classes of spring device detection library in Servlet application.

Detecting device type in spring mvc application using spring library. Full details of spring-mvc configuration using classes DeviceWebArgumentResolver, DeviceResolverHandlerInterceptor, DeviceResolverRequestFilter.