WIN10 system Java environment variable setting method

WIN10 system Java environment variable setting method introduction:

1. First, right click on "This Computer" and select "Properties". As shown in Figure 1

Figure 1

2, select "Advanced system settings." As shown in Figure 2

Figure 2

3, choose "Environment variable". As shown in Figure 3

Figure 3

4, select "New". As shown in Figure 4

Figure 4

5, click New, it will appear this, the variable named "java_home" (copy my quotes within the content can be, without quotes, the same below), variable value, must be the path of their own JDK, such as my installation path is e:java\jdk\, path issues need attention. As shown in Figure 5

Figure 5

6, next find "CLASSPATH", no words on the "new". As shown in Figure 6

Figure 6

7, the variable is named "CLASSPATH" variable value.; %java_home%\lib\dt.jar;%java_home%\lib\tools.jar; " As shown in Figure 7

Figure 7

8, find path, edit it, before its original variable value plus ";%java_home%\bin;%java_home%\jre\bin;", the method of addition is such c: variable value. As shown in Figure 8

Figure 8

9, remember to complete the points after two to determine. As shown in Figure 9

Figure 9

10, finally, is to test their own configuration is successful, while pressing r+ WIN (the key of the Windows flag), input cmd. As shown in Figure 10

Figure 10

11, enter the command prompt, input Java, click "Enter", come out these Chinese, on the line. As shown in Figure 11

Figure 11

12, then enter Javac, click "Enter", out of these Chinese will do. As shown in Figure 12

Configure JDK environment variables under Windows XP:

1. Install the JDK, the installation process can customize the installation directory and other information, such as our choice of installation directory for d:/java/jdk1.5 .0_08

2. When the installation is complete, right-click "My Computer" and click "Properties";

3. Select the "Advanced" tab and click "Environment variable";

4. In system variables, set 3 properties, Java_home,path, CLASSPATH (regardless of the case), if already exist click "Edit", does not exist then click "New";

5.java_home indicates the JDK installation path, which is the path that was selected when the installation was just made d:/java/jdk1.5.0_ 08, this path includes folders such as LIB,BIN,JRE (this variable is best set, because later run Tomcat,eclipse and so on will need to rely on * this variable);

Path enables the system to recognize Java commands under any path, set to:

% Java_home%/bin;%java_home%/jre/bin

Classpath is the Java load class (class or Lib) path, and only the class is in Classpath, the Java command is recognized, set to:

.; %java_home%/lib/dt.jar;%java_home%/lib/tools.jar (to be added. Represents the current path)

%java_home% is the reference to the previously specified java_home;

6. Start "->;" Run, type "cmd";

7. Type the command "Java-version", "Java", "Javac" a few commands, the screen shows that the environment variable configuration success,

8. All right, finish the call. Let's start with your first Java program.