Monday, 25 September 2017

Learn Java from the ground up


Java Training

 Java is a simple language:

Java was first modeled after C and C ++, minus some potentially confusing features. Pointers, multiple deployment inheritances, and operator overhead are C / C ++ features that are not part of Java. A feature not necessary in C / C ++, but essential for Java, is a garbage collection facility that automatically retrieves objects and tables.

Java is an object-oriented language:

Java's object-oriented orientation allows developers to adopt Java to solve a problem rather than forcing us to manipulate the problem to meet language constraints. This is different from a C-structured language. For example, while Java allows you to focus on savings account objects, C requires you to think separately about the status of the savings account (such balance) and behaviors (such as archiving and withdrawal).

Java is a language compatible with the network:

 The extensive Java network library facilitates the management of TCP / IP (TCP / IP) network protocols, such as HTTP (HyperText Transfer Protocol) and File Transfer Protocol (FTP), and simplifies the network connection task. In addition, Java programs can access objects on a TCP / IP network through the Uniform Resource Locators (URL), just as easily as you can access them from the local file system.

Java is an interpreted language.:

At runtime, a Java program runs indirectly on the underlying platform (such as Windows or Linux) through a virtual machine (which is a representation of software from a hypothetical platform) and the associated execution environment. The virtual machine translates Java program bytecodes (instructions and associated data) into platform-specific instructions through interpretation. Interpretation is the act of determining what a bytecode method means and then choosing specific instructions for the "canned" platform to execute. The virtual machine then performs platform-specific instructions.The interpretation makes debugging Java programs easier to debug because more compile-time information is available at runtime. The interpretation also allows to delay the connection step between the elements of a Java program until the execution, which accelerates the development.

Java is a robust language:

 Java programs must be reliable because they are used in both critical and critical applications, ranging from Blu-ray players to vehicle navigation systems or air control. Language features that help make Java robust include declarations, compile-time duplication type checking, and runtime (to avoid incompatible versioning problems), true matrices with automatic checking, limitations, and omission of pointers. (We will discuss all of these features in more detail later in this series).
Another aspect of Java robustness is that loops must be controlled by Boolean expressions rather than integer expressions where 0 is false and a non-zero value is true. For example, Java does not allow a type C loop such that (x) x ++; because the loop may not finish where it was expected. Instead, you must explicitly provide a Boolean expression, such as, while (x! = 10) x ++; (which means that the loop will be executed until x equals 10).

Java is a secure language:

 Java programs are used in distributed / network environments. Because Java programs can migrate and run on different platforms across a network, it is important to protect these platforms from malicious code that can spread viruses, steal credit card information, or otherwise perform malicious acts. Java language features that support robustness (such as the omission of pointers) work with security features such as the Java sandbox security model and public-key cryptography. Together, these features prevent viruses and other dangerous codes from wreaking havoc on an unsuspecting platform.In theory, Java is safe. In practice, several security vulnerabilities have been detected and exploited. Therefore, Sun Microsystems and Oracle continue to publish security updates.
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