JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to change Java (JVM) version in Mac OS?


Recently, I had an issue to change my default JVM version in my Mac machine. I want to provide steps to change java version with Mac OS. Use below command to check current default java version:

java -version

Download required java version and install it before proceed to further.

Open terminal, and run below command:

cd /System/Library/Frameworks/JavaVM.framework/Versions/

Check where your java is installed, in general, you can find your java installation in the below location:

/System/Library/Java/JavaVirtualMachines
/Library/Java/JavaVirtualMachines/

Find the right jdk path and create a softlink as shown below: Here I am making Java 7 as default version.

rm CurrentJDK
ln -s /Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/ CurrentJDK

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Knowledge Centre
What is java static import?
By using static imports, we can import the static members from a class rather than the classes from a given package. For example, Thread class has static sleep method, below example gives an idea:

import static java.lang.Thread;
public class MyStaticImportTest {
public static void main(String[] a) {
try{
sleep(100);
} catch(Exception ex){

}
}
}
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-- Spanish Proverb

About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected] or you can comment on the page.

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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