20 lines
571 B
Java
20 lines
571 B
Java
package singleton;
|
|
|
|
public enum AppConfigEnum {
|
|
|
|
INSTANCE; // The JVM creates this exactly once, period.
|
|
|
|
// Enum instances can have fields and methods like any class
|
|
private final String configPath;
|
|
|
|
AppConfigEnum() {
|
|
// Enum constructors run once, when the constant is first used
|
|
this.configPath = System.getProperty("config.path", "application.properties");
|
|
System.out.println("Loading config from: " + configPath);
|
|
}
|
|
|
|
public String getProperty(String key) {
|
|
return System.getProperty(key, "(not set)");
|
|
}
|
|
}
|