Search results
Jan 27, 2015 · solution 2) create a PL/SQL function to return Java system properties. create function get_java_property(prop in varchar2) return varchar2 is. language java name 'java.lang.System.getProperty(java.lang.String) return java.lang.String'; And the run a select for the Java version.
Jun 29, 2020 · In the terminal, we can use `javac -version` to check the JDK version, and `java -version` to check the JRE version.
- Overview
- Introduction to The Problem
- Standard Output and Standard Error
- Using The grep Command with The -Q Option
- Conclusion
OpenJDK and Oracle JDK are two widely used Java environments in the industry. Both of them are performant and stable. However, they have some differences. Therefore, sometimes, we may want to quickly get the answer to the question: “Which JDK is running on this machine?” In this tutorial, we’ll address how to check if the current Java environment i...
As we’ve known, the command “java -version” will print the detailed Java version information. So, for example, if we run it on a machine with Oracle JDK installed: The OpenJDK supports the same command, too: Of course, there are other JDK implementations. We can extend the solution to adapt to other JDK vendors. However, for simplicity, we’ll only ...
As soon as we see the two outputs of “java -version“, an idea may come up already: grep “OpenJDK” in the output of java -version. The idea is straightforward. Let’s do a quick test with the OpenJDK: As we can see in the command above, we’ve passed the option -c (printing the count of matching lines only) to the grep command. However, the output con...
When we pass the -q option to the grep command, grep will output nothing. But, if the given pattern is not matched, the grep command exits with code 1. Otherwise, it returns with the exit code 0: We can make use of the exit code and conditionally concatenate multiple commands using the && and the || operators. Let’s understand the operators through...
In this article, we’ve learned how to check if the current JDK is OpenJDK or Oracle JDK through examples. We’ve addressed that combining grep -q and the && and ||operators sometimes can solve this kind of problem simply.
- Kai Yuan
Jan 8, 2024 · You can check your Java version graphically by searching for "About Java" or "Configure Java" in the Start menu and clicking the top result. If you want to check your Java version in a command-line interface, open Command Prompt or PowerShell, then enter "java -version" in the console.
Aug 26, 2019 · This article describes some ways which you can use to check version of Java on your Windows computer. More exactly, the version of Java Runtime Environment (JRE) or Java Development Kit (JDK). If you have OracleJDK installed on your computer, simply click menu Start, type about java into the search area, then click the About Java icon in the ...
Jun 12, 2012 · java -version javac -version These commands display what version of java (the interpreter that runs Java programs) and javac (the compiler that creates them) you have installed. See the image above for details.
People also ask
Where can I find a Java version of Oracle?
How do I know what version of Java I have installed?
How to check JDK version?
How to check Java compiler version?
How to check runned Java version?
How do I Check my Java version in PowerShell?
Using the Command-line to find Java Versions - Mac. The Java Runtime (JRE) that you download from java.com or oracle.com contains a plugin to run Java content from your browser. In order to use the command line tools, you will need to download the Java Development Kit (JDK).
