TestPropertiesInjection.java

import com.google.inject.AbstractModule;
import com.google.inject.Guice;
import com.google.inject.Inject;
import com.google.inject.name.Named;
import com.google.inject.name.Names;

import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;

public class TestPropertiesInjection {
    private final String myprop;

    @Inject
    public TestPropertiesInjection(@Named("myprop") String myprop) {
        this.myprop = myprop;
    }

    public String getMyprop() {
        return myprop;
    }

    public static void main(String[] args) {
        AbstractModule module = new AbstractModule() {
            @Override
            protected void configure() {
                Properties defaults = new Properties();
                defaults.setProperty("myprop", "default");
                try {
                    Properties props = new Properties(defaults);
                    props.load(new FileInputStream("my.properties"));
                    Names.bindProperties(binder(), props);
                } catch (IOException e) {
                    logger.error("Could not load config: ", e);
                    System.exit(1);
                }
            }
        };

        final TestPropertiesInjection instance = Guice.createInjector(module).getInstance(TestPropertiesInjection.class);
        System.out.println("myprop = " + instance.getMyprop());
    }
}