SystemSettingUtils (AWS Java SDK :: Utilities 2.28.26 API)

java.lang.Object
- software.amazon.awssdk.utils.internal.SystemSettingUtils

```
public final class SystemSettingUtils
extends Object
```
A set of static utility methods for shared code in SystemSetting.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static Optional<String>`	`resolveEnvironmentVariable(String key)`	Attempt to load a key from the environment variables.
`static Optional<String>`	`resolveEnvironmentVariable(SystemSetting setting)`	Attempt to load this setting from the environment variables.
`static Optional<String>`	`resolveNonDefaultSetting(SystemSetting setting)`	Resolve the value of this system setting, loading it from the System by checking: The system properties. The environment variables.
`static Optional<String>`	`resolveSetting(SystemSetting setting)`	Resolve the value of this system setting, loading it from the System by checking: The system properties. The environment variables. The default value.
`static Boolean`	`safeStringToBoolean(SystemSetting setting, String value)`	Convert a string to boolean safely (as opposed to the less strict `Boolean.parseBoolean(String)`).

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - resolveSetting
```
public static Optional<String> resolveSetting(SystemSetting setting)
```
    Resolve the value of this system setting, loading it from the System by checking:
    
    The system properties.
    
    The environment variables.
    
    The default value.
  - resolveNonDefaultSetting
```
public static Optional<String> resolveNonDefaultSetting(SystemSetting setting)
```
    Resolve the value of this system setting, loading it from the System by checking:
    
    The system properties.
    
    The environment variables.
    
    This is similar to resolveSetting(SystemSetting) but does not fall back to the default value if neither the environment variable or system property value are present.
  - resolveEnvironmentVariable
```
public static Optional<String> resolveEnvironmentVariable(SystemSetting setting)
```
    Attempt to load this setting from the environment variables.
  - resolveEnvironmentVariable
```
public static Optional<String> resolveEnvironmentVariable(String key)
```
    Attempt to load a key from the environment variables.
  - safeStringToBoolean
```
public static Boolean safeStringToBoolean(SystemSetting setting,
                                          String value)
```
    Convert a string to boolean safely (as opposed to the less strict Boolean.parseBoolean(String)). If a customer specifies a boolean value it should be "true" or "false" (case insensitive) or an exception will be thrown.