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This article will explain in detail how to set JDK environment variables in java, Xiaobian thinks it is quite practical, so share it with you as a reference, I hope you can gain something after reading this article.

Install, configure j2sdk:

Run j2sdk installer, customize the path, our installation path is: C:j2sdk1.4.2_04

Configure j2sdk:

Configure environment variables:

Add the following environment variables to My Computer-> Properties-> Advanced-> Environment Variables-> System Variables:

JAVA_HOME=C:j2sdk1.4.2_04

CLASSPATH=.; C:j2sdk1.4.2_04lib ools.jar;C:j2sdk1.4.2_04libdt.jar;C:j2sdk1.4.2_04

in;

path=C:j2sdk1.4.2_04in;

Write a simple java program to test whether the J2SDK has been installed successfully:

public class hello

{

public static void main(String args[])

{

System.out.println("Hello");

}

}

Save the program as a file named hello.java.

Open a command prompt window, go to the directory hello.java is in, and type the following command

javac hello.java

java hello

At this point, if you print hello, the installation is successful. If you do not print this sentence, carefully check whether the above configuration is correct.

Note: Make sure "Hide extensions of known file types" is unchecked in the system folder option

About "java how to set JDK environment variables" this article is shared here, I hope the above content can be of some help to everyone, so that you can learn more knowledge, if you think the article is good, please share it to let more people see.

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