January 13 Java Basic Course

Source: Internet
Author: User
Tags clear screen

1. Except congruential: decimal ext. 2 binary

2. Important Abbreviations

JDK (Java Development Kit), JRE (Java Runtime), SDK (software Development Kit), JVM (Java Virtual machine)

3.JAVA Program execution mechanism

. java. CLSS virtual machine load class, checksum, compile as local code operating system

4.JDK Setting Environment variables

More than 1.5 of the can

Environment variables, system variables, PATH

Value to set the bin directory directly, such as D:\Program Files\java\jdk1.6.0_21\bin

5.DOS command line file directory Basic command operation

Cd./current Directory

CD: Return to the previous level

cd+ Directory First Letter +tab system will prompt

Cd+tab system switch has the specific directory under this directory

In a disk direct input d: into the D disk, without CD d:/

CLS Clear Screen

January 13 Java Basic Course

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