Execute Around Method Pattern - Resource

resouce.java

/* Extracted from https://www.youtube.com/watch?v=xF0rupA848E */

class Resource {
 public Resource() {
   System.out.println("created...");
 }
  
 public Resource op1() {
   System.out.println("op1...");
   return this;
 }
 
 public Resource op2() {
   System.out.println("op2...");
   return this;
 }
  
 private void close() {
   System.out.println("clean up external resource");
 }
  
  public static void use(Consumer<Resource> block) {
    Resource resource = new Resource();
    
    try {
      block.accept(resource);
    } finally {
      resource.close();
    }
  }
}

public class Sample {
  public static void main(String[] args) {
    Resource.use(resource ->
      resource.op1()
        .op2());
  }
}
  }