xecute lanmda statement if value is not null or empty

IfAction.java

package jp.co.ulsystems.javafx;

import java.util.HashMap;
import java.util.Map;
import java.util.function.Consumer;

/**
 * execute lanmda statement if value is not null or empty
 * 
 * this replace following code
 * 
 * if (bean.getHoge() != null) {bean2.setHoge(bean.getHoge());}
 * 
 */
public class Main {

    public static class IfAction {
        
        public static IfAction of() {
            return new IfAction();
        }
        
        <I> IfAction then(I in, Consumer<I> cons) {
            if (in != null) {
                if (!(in instanceof String) || in.toString().trim().length() != 0)
                    cons.accept(in);
            }
            return this;
        }
    }
    
    public static void main(String[] args) {
        StringBuilder sb = new StringBuilder();
        
        Map<String , String> map = new HashMap<>();
        map.put("A", "AA");
        
        IfAction.of()
                .then("222", in -> sb.append(in))
                .then(" ", in -> sb.append(in)) // not execute
                .then(Long.valueOf("345"), in -> sb.append(in))
                .then(null, in -> sb.append(in)) // not execute
                .then(map.get("A"), in -> sb.append(in)) 
                .then(map.get("B"), in -> sb.append(in)) // not execute
                .then(Long.valueOf("567"), in -> sb.append(in));
        
        System.out.println(sb.toString()); // 22234AA5567
        
    }
}