class.getResources()

getClass().getResource()

searches relative to the .class file while

getClass().getClassLoader().getResource()

searches relative to the classpath root.

To obtain current path you can run

public game(){
    String currentPath = this.getClass().getResource("").getPath();
    System.out.println(currentPath);
}

or respectively

public game(){
    String currentPath = this.getClass().getClassLoader().getResource("").getPath();
    System.out.println(currentPath);
}