What does java se do?

Java se is the general name for the Java programming language and Java platform launched by Sun Microsystems in May 1995.

The HotJava browser (supporting Java applets) implemented in Java shows the charm of Java: cross-platform, dynamic Web and Internet computing. Since then, Java has been widely accepted and promoted the rapid development of the Web. Commonly used browsers now support Java applets.

The Java language is probably the first choice for network application languages. This is all due to its high degree of security and cross-platform features. You can see it on almost all current computer platforms. The legacy of Java.

Java se is used to develop and deploy Java applications on desktops, servers, and embedded devices and real-time environments. Java SE includes class libraries for developing Java Web services. At the same time, Java SE is Java EE provides the foundation.

Java SE (Java Platform, Standard Edition, Java Standard Edition) is based on JDK and JRE.

JavaSE Origin

Java’s security model dates back to the early days of the platform, when it was primarily viewed as a browser extension mechanism to enhance the user experience. . The Java code executed can be derived from a variety of sources, some of which are unknown or unreliable. Accordingly, the platform's security initially focused primarily on solving the problem of verifying that the code being executed was trustworthy, and the entire game revolved around executing applets in the browser. However, this model is simply divided into trusted and untrusted parts, and even moderately complex applications cannot run.

Starting from version 1.2, Java has gradually been recognized as a programming platform, and is no longer just a browser extension. Sun has begun to provide more flexible security functions, starting with the concept of configurable security policies. The Java documentation describes its development.

When the Java platform began to make its way into enterprise environments, it quickly became apparent that purely code-based capabilities were incapable of managing the security of large applications. Version 1.4 of the Java platform introduced a new feature called Java Authentication and Authorization Service (JAAS) for integrating user-based permissions into security policies. Permissions for a particular code frame on the stack are now based both on the source of the code (its CodeSource) and on the identity, group, and role assigned to the user upon authentication.

JAVA SE is an indispensable environment for running JAVA programs. Once you have Java software, you will enter a new interactive world.

In the past, many people may have complained that although Java has quite good cross-platform and security protection features, its execution speed is far lower than that of various traditional programming languages ​​such as C.

However, this time SunMicrosystem is well prepared. Not only has it undergone major reforms in execution speed, but it has also made some modifications and enhancements in content. The latest JAVA runtime library creates an environment for running JAVA. This upgraded version has enhanced the functionality of the Java Plug-in, providing integrated support for Netscape 6OpenJVM, etc. Since JRE has a lot of new functions and program corrections, if you need detailed information, you may wish to refer to Sun's official website.

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