di.java

class Client {
	
	private ServiceA a;
	private ServiceB b;
  
  // Property injection
	public ServiceC c;
	
  // Constructor injection
	public Client(ServiceA a, ServiceB b) {
		this.a = a;
		this.b = b;
	}
	
  // Method injection
	public setServiceC(ServiceC c) {
		this.c = c;
	}
}