java - how to set custom system variable for JVM to access properties file? -

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i need read config.properties file location set variable -dapp.conf=/path/to/config.properties , set datasource when launch application. file should @ location within filesystem. how this?

you can load properties file next:

properties p = new properties(); try (reader reader = new filereader(system.getproperty("app.conf"))) {     p.load(reader); }

once loaded can use properties instance set datasource configuration.


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