How to call function with callbacks in Java like I do it in C#? -

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i'm pretty new java need write c# code (this hand-typed prototype illustrate need)

private void parentfunc() {     var worker = new workerclass()      worker.dowork(e => console.write("progress" + e));   }  public class workerclass() {     public method dowork(action<int> callback)     {         (int i=1; i<1000; i++) callback.invoke(i);       } }

little explanation. i'm using asynctask in android , calling outside processor classed them signal can publishprogress. prefer not put interface on asynctask

since closures not supported yet have use interface , anonymous inner class. 

private void parentfunc {     workerclass worker = new workerclass();      worker.dowork(new callback<integer>() {         public void invoke(integer arg) {             system.out.println("progress" + arg);         }     }); }  public class workerclass {     public dowork(callback<integer> callback) {         (int i=1; i<1000; i++) callback.invoke(i);       } }  public interface callback<t> {     public void invoke(t arg); }

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