Package org.apache.juneau.internal

Class SystemEnv

java.lang.Object

org.apache.juneau.internal.SystemEnv

public class SystemEnv
extends Object

Utility methods for accessing system properties and environment variables.

See Also:

Constructor Summary

Constructors

Constructor	Description
SystemEnv()

Method Summary

Modifier and Type	Method	Description
static Optional<String>	env(String name)	Looks up a system property or environment variable.
static <T> T	env(String name, T def)	Looks up a system property or environment variable.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SystemEnv

public SystemEnv()

Method Details

env

public static <T> T env(String name,
 T def)

Looks up a system property or environment variable.

First looks in system properties. Then converts the name to env-safe and looks in the system environment. Then returns the default if it can't be found.

Type Parameters:

T - The type to convert the value to.

Parameters:

name - The property name.

def - The default value if not found.

Returns:

The default value.

env

public static Optional<String> env(String name)

Looks up a system property or environment variable.

First looks in system properties. Then converts the name to env-safe and looks in the system environment. Then returns the default if it can't be found.

Parameters:

name - The property name.

Returns:

The value if found.