The full name of jdk is "Java Development Kit", which refers to the Java language software development toolkit, which is mainly used for the development of java applications on mobile devices and embedded devices. JDK is the core of Java development, including the Java runtime environment, a bunch of Java tools and Java-based class libraries.
The operating environment of this tutorial: windows7 system, java8 version, DELL G3 computer.
jdk (full name is Java Development Kit) is a product of SunMicrosystems for Java developers. It is a software development tool kit for the Java language. It is mainly used for java applications on mobile devices and embedded devices.
JDK is the core of the entire JAVA, including Java Runtime Envirnment, a bunch of Java tools (javac/java/jdb, etc.) and Java basic class libraries (i.e. Java API including rt.jar ).
The most mainstream JDK is the JDK released by Sun. In addition to Sun, there are many companies and organizations that have developed their own JDK. IBM has developed its own JDK, and domestic Taobao has also developed its own JDK. Each organization develops its own JDK in order to improve certain aspects to meet its own needs.
JDK is a development environment for building applications, applets, and components published on the Java platform. It does not provide specific development software. What it provides is the class library and Java language specification that must be used no matter what kind of development software you use to write Java programs.
The basic components included in JDK include:
javac - compiler, converts source program into bytecode
jar – packaging tool, packages related class files into one file
javadoc – documentation generator, extracts documentation from source code comments
jdb – debugger, error checking tool
java – Run the compiled java program (.class suffix)
appletviewer: Applet browser, a Java browser that executes Java applets on HTML files.
Javah: Generate a C procedure that can call a Java procedure, or create a header file for a C procedure that can be called by a Java program.
Javap: Java disassembler that displays accessible functions and data in compiled class files, while displaying the byte code meaning.
Jconsole: Java tool for system debugging and monitoring
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