java - Spring bean initializing dependencies with new keyword? -

i have legacy code class spring bean defined , initialized through xml. singleton field member class dependency. there setter method it, assuming supposed set via spring, although didn't find xml defining it. there get() method dependency, has null check , if null manually creates outside of spring so

class test{     dependency d;      setd(dependency d){this.d=d;}      getd(){         if(this.d==null){             this.d = new dependency();         }return this.d      } } 

i trying understand why spring bean initializing dependency outside of spring , implications if any, bad/old design? or not understanding how spring works.

i it's bad design, author wanted provide fall-back case when d not injected in spring. idea attempt make d lazy dependency. should explore what's inside d.

generally can use @required mark members should injected. or use simple , nice constructor injection. if you're concerned lazy injection, that's how spring works default.