Loading a properties file from Java package

Question

I need to read a properties files that's buried in my package structure in com.al.common.email.templates.

I've tried everything and I can't figure it out.

In the end, my code will be running in a servlet container, but I don't want to depend on the container for anything. I write JUnit test cases and it needs to work in both.

Answer 1

The following two cases relate to loading a properties file from an example class named TestLoadProperties.

Case 1: Loading the properties file using ClassLoader

InputStream inputStream = TestLoadProperties.class.getClassLoader()
                          .getResourceAsStream("A.config");
properties.load(inputStream);

In this case the properties file must be in the root/src directory for successful loading.

Case 2: Loading the properties file without using ClassLoader

InputStream inputStream = getClass().getResourceAsStream("A.config");
properties.load(inputStream);

In this case the properties file must be in the same directory as the TestLoadProperties.class file for successful loading.

Note: TestLoadProperties.java and TestLoadProperties.class are two different files. The former, .java file, is usually found in a project's src/ directory, while the latter, .class file, is usually found in its bin/ directory.

Answer 2

use the below code please :

    Properties p = new Properties(); 
    StringBuffer path = new StringBuffer("com/al/common/email/templates/");
    path.append("foo.properties");
    InputStream fs = getClass().getClassLoader()
                                    .getResourceAsStream(path.toString());


if(fs == null){
     System.err.println("Unable to load the properties file");
  }
else{
   try{
       p.load(fs);
     } 
catch (IOException e) {
        e.printStackTrace();
      }
   }

Answer 3

public class Test{  
  static {
    loadProperties();
}
   static Properties prop;
   private static void loadProperties() {
    prop = new Properties();
    InputStream in = Test.class
            .getResourceAsStream("test.properties");
    try {
        prop.load(in);
        in.close();
    } catch (IOException e) {
        e.printStackTrace();
    }

}