javaws command is not working

javaws command is not working but java is installed on linux environment

$ sudo javaws viewer.jnlp 

bash: javaws: command not found...

How to resolve the issue ?

$ sudo update-alternatives --config java

There are 2 programs which provide 'java'.

  Selection    Command
-----------------------------------------------
*+ 1           java-1.8.0-openjdk.x86_64 (/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141-1.b16.fc24.x86_64/jre/bin/java)
   2           /usr/java/jdk1.8.0_144/jre/bin/java

Enter to keep the current selection[+], or type selection number: 

There are 2 programs which provide 'java'.

  Selection    Command
-----------------------------------------------
*+ 1           java-1.8.0-openjdk.x86_64 (/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141-1.b16.fc24.x86_64/jre/bin/java)
   2           /usr/java/jdk1.8.0_144/jre/bin/java

Enter to keep the current selection[+], or type selection number: 2

Check javaws command again on the environment

$ javaws

Java(TM) Web Start 11.144.2.01-fcs 
Usage:	javaws [run-options] 
      	javaws [control-options]

where run-options include:
  -verbose       	display additional output
  -offline       	run the application in offline mode
  -system        	run the application from the system cache only
  -Xnosplash     	run without showing a splash screen
  -J     	supply option to the vm
  -wait          	start java process and wait for its exit

control-options include:
  -viewer        	show the cache viewer in the java control panel
  -clearcache    	remove all non-installed applications from the cache
  -uninstall     	remove all applications from the cache
  -uninstall               	remove the application from the cache
  -import [import-options] 	import the application to the cache

import-options include:
  -silent        	import silently (with no user interface)
  -system        	import application into the system cache
  -codebase 	retrieve resources from the given codebase
  -shortcut      	install shortcuts as if user allowed prompt
  -association   	install associations as if user allowed prompt
Try jnlp file open using javaws command
$ sudo javaws viewer.jnlp 

jnlp file opens java application.
javaws command is not working but java is not installed on linux environment
Please try to install java on the linux environment to fix the issue.

 Java installation  link can be used to refer how to install java on different environment machines.




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