The JDK (Java development Kit) is a product of Sun Microsystems for Java developers. Since Java was launched, the JDK has become the most widely used Java SDK. The JDK is the core of the entire Java, including the Java Runtime Environment, Java tools, and the Java base Class library. JDK is the first step to learning Java. The jrocket running on the x86 platform is also much more efficient than the sun JDK on the service side. Starting with Sun's JDK5.0, it provides a very useful feature such as generics, and its version is constantly updated and its operational efficiency has been greatly improved.
The basic components included in the JDK include:
javac– compiler, the source program to the bytecode jar– packaging tool, the relevant class files packaged into a file javadoc– document generator, extract the document from the source notes 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: Generates a C procedure that can invoke a Java procedure, or a header file that can be called by a Java program. The Javap:java disassembler, which displays the accessible functionality and data in the compiled class file, shows the meaning of the byte code. Jconsole:java Tools for system commissioning and monitoring
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