java
Launches a Java application .
TLDR
Execute a Java .class file that contains a main method by using just the class name
Execute a Java program and use additional third-party or user-defined classes
Execute a .jar program
Execute a .jar program with debug waiting to connect on port 5005
Display JDK, JRE and HotSpot versions
Display help
Help
Usage: java [options]
(to execute a class)
or java [options] -jar
(to execute a jar file)
or java [options] -m
java [options] --module
(to execute the main class in a module)
or java [options]
(to execute a single source-file program)
Arguments following the main class, source file, -jar
-m or --module
main class.
where options include:
-cp
-classpath
--class-path
A : separated list of directories, JAR archives,
and ZIP archives to search for class files.
-p
--module-path
A : separated list of directories, each directory
is a directory of modules.
--upgrade-module-path
A : separated list of directories, each directory
is a directory of modules that replace upgradeable
modules in the runtime image
--add-modules
root modules to resolve in addition to the initial module.
ALL-MODULE-PATH.
--list-modules
list observable modules and exit
-d
--describe-module
describe a module and exit
--dry-run create VM and load main class but do not execute main method.
The --dry-run option may be useful for validating the
command-line options such as the module system configuration.
--validate-modules
validate all modules and exit
The --validate-modules option may be useful for finding
conflicts and other errors with modules on the module path.
-D
set a system property
-verbose:[class|module|gc|jni]
enable verbose output
-version print product version to the error stream and exit
--version print product version to the output stream and exit
-showversion print product version to the error stream and continue
--show-version
print product version to the output stream and continue
--show-module-resolution
show module resolution output during startup
-? -h -help
print this help message to the error stream
--help print this help message to the output stream
-X print help on extra options to the error stream
--help-extra print help on extra options to the output stream
-ea[:
-enableassertions[:
enable assertions with specified granularity
-da[:
-disableassertions[:
disable assertions with specified granularity
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions
-agentlib:
load native agent library
see also -agentlib:jdwp=help
-agentpath:
load native agent library by full pathname
-javaagent:
load Java programming language agent, see java.lang.instrument
-splash:
show splash screen with specified image
HiDPI scaled images are automatically supported and used
if available. The unscaled image filename, e.g. image.ext,
should always be passed as the argument to the -splash option.
The most appropriate scaled image provided will be picked up
automatically.
See the SplashScreen API documentation for more information
@argument files
one or more argument files containing options
-disable-@files
prevent further argument file expansion
--enable-preview
allow classes to depend on preview features of this release
To specify an argument for a long option, you can use --
--