Detailed explanation of the differences between Application and Applet

The main differences in structure between Java Applet and Java Application are:
(1) Different operating methods. The Java Applet program cannot run alone. It must be attached to and embedded in a web page written in HTML language, and its execution is controlled through a Java-compatible browser. Java Application is a complete program that can run independently. As long as there is a virtual machine that supports Java, it can run independently without the support of other files.
(2) The running tools are different. The interpreter that runs the Java Applet program is not independent software, but is embedded in the browser as part of the browser software. After the Java Application program is compiled, it can be executed while being interpreted using an ordinary Java interpreter, while Java Applets must be executed through a web browser or Applet observer.
(3) The program structure is different. Each Java Application program must contain one and only one main method. When the program is executed, it first looks for the main method and uses it as the entry point to start running. The class that contains the main method is often called the main class. That is to say, every Java Application program contains a main class. The Applet program does not have a main class with a main method, which is why the Applet program cannot run independently. Although Applet does not have a main class with a main method, Applet must have a class derived from java.applet.Applet, which is provided by the Java system.
(4) The Java Applet program can directly use the graphical user interface provided by the browser or AppletViewer, while the Java Application program must write additional special code to create its own graphical interface.
(5) Different limitations. Java Application programs can be designed to perform various operations, including reading/writing files. However, Java Applet can neither read nor write to the disk files of the site. operate. However, due to the introduction of Applets, Web pages have dynamic multimedia effects and interactivity, which makes Web pages written in the HTML language called hypertext but actually plain text truly have hypertext. Function, it can not only display text information, but also have various picture effects and dynamic graphic effects, thereby making the page appear vivid and beautiful; in addition, Applet adds buttons, etc. to the Web page functionality, thereby increasing interactivity. 【Related Recommendations】

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