java - How to remove try/catch repetitions in class methods?

Question

I have RESTeasy service. And have implemented simple error handling on methods using try catch and feel something is not very well with it. I've noticed try catch repetition on all my methods. So I want ask way how to avoid repetition (to reduce code size) of try catch but not lost functionality.

@Path("/rest")
@Logged
@Produces("application/json")
public class CounterRestService {

  @POST
  @Path("/create")
  public CounterResponce create(@QueryParam("name") String name) {
    try {
        CounterService.getInstance().put(name);
        return new CounterResponce();
    } catch (Exception e){
        return new CounterResponce("error", e.getMessage());
    }   
}

@POST
@Path("/insert")
public CounterResponce create(Counter counter) {
    try {
        CounterService.getInstance().put(counter);
        return new CounterResponce();
    } catch (Exception e){
        return new CounterResponce("error", e.getMessage());
    }
}

@DELETE
@Path("/delete")
public CounterResponce delete(@QueryParam("name") String name) {
    try {
        CounterService.getInstance().remove(name);
        return new CounterResponce();
    } catch (Exception e){
        return new CounterResponce("error", e.getMessage());
    }
}
... // other methods with some try catch pattern

response

public class CounterResponce {
private String status;

@JsonSerialize(include=Inclusion.NON_NULL)
private Object data;

public CounterResponce() {
    this.status = "ok";
}

public CounterResponce(Object o) {
    this.status = "ok";
    this.data = o;
}

public CounterResponce(String status, Object o){
    this.status = status;
    this.data = o;
}

public String getStatus() {
    return status;
}
public void setStatus(String status) {
    this.status = status;
}
public Object getData() {
    return data;
}
public void setData(Object data) {
    this.data = data;
}
}

exceptions source

public class CounterService {

private Map<String, StatisticCounter> counters = new HashMap<String, StatisticCounter>();

private static CounterService instance = null;

protected CounterService() {}

public static CounterService getInstance() {
      if(instance == null) {
         instance = new CounterService();
      }
      return instance;
}

public StatisticCounter get(String name){
    StatisticCounter c =  counters.get(name);
    if(c == null)throw new IllegalArgumentException("Counter "+name+" not exist");
    return c;
}

public void put(String name){
    if(name==null)throw new IllegalArgumentException("null can`t be as name");
    if(counters.get(name)!=null)throw new IllegalArgumentException("Counter "+name+" exist");
    counters.put(name, new Counter(name));
 }...

Answer 1

1. Introduce a private method such as "apply" which can take function as parameter if you use Java 8. This method will have the error handling and/or mapping, response mapping and response generation code centralized.
2. From create and delete methods, invoke this apply method and pass the desired counter operation you wish to perform as a lambda expression.