Generics and interfaces

impl.java

    @Override
    public String talk(Result<String> result) {
        PingReply pingReply = new PingReply();
        pingReply.setReply((String) result.getResult());
        return Parser.toJson(pingReply, PingReply.class);
    }

Result.java

package net.virtalab.jsonio.api;

/**
 * Result container
 */
public class Result<T> {
    private T result;

    public T getResult(){
        return result;
    }

    public void setResult(T result){
        this.result = result;
    }

}

SubApp.java

package net.virtalab.jsonio.api;

import net.virtalab.jsonio.exceptions.DataValidationException;

/**
 * Class description.
 */
public interface SubApp {
    public Input read(String incomingJson) throws DataValidationException;
    public Result execute(Input<?> input);
    public String talk(Result<? extends Object> result);

}