json builder

Builder.java

public class Builder {


    private String name;
    private String description;

    public Thing build(){
        return new Thing(name, description);
    }

    public Builder withName(String name){
        this.name = name;
        return this;
    }

    public Builder withDescription(String description){
        this.description = description;
        return this;
    }
}

BuilderTest.java

import org.junit.Test;

import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;

public class BuilderTest{


    @Test
    public void testBuilder(){
        Thing aThing = new Builder().withName("aname").withDescription("somedesc").build();
        assertThat(aThing.getDescription(),is("somedesc"));
        assertThat(aThing.getName(), is("aname"));
    }
}

JsonBuilder.java

import org.codehaus.jackson.map.ObjectMapper;

import java.io.IOException;


public class JsonBuilder {

    private Thing thing =null;

    public Thing build(){
        return thing;
    }

    public JsonBuilder add(String s) throws  IOException {
        this.thing = new ObjectMapper().readValue(convertToJson(s), Thing.class);
        return this;
    }


    private String convertToJson(String nvps){
        String json = nvps.replaceAll("([A-za-z0-9.]+)","\"$1\"");
        json = "{" + json + "}";
        return json;

    }
}

JsonBuilderTest.java

import org.junit.Test;

import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;

public class JsonBuilderTest {



    @Test
    public void testJsonBuilder() throws Exception{
        Thing aThing = new JsonBuilder().add("name:aname,description:somedesc").build();
        assertThat(aThing.getDescription(),is("somedesc"));
        assertThat(aThing.getName(),is("aname"));
    }
}

Thing.java

class Thing
{
    private String name;

    private String description;


    public Thing(){}

    public Thing(String name, String description){
        this.name = name;
        this.description = description;
    }

    public String toString(){
        return String.format("name:%s description:%s", name, description);
    }


    String getName() {
        return name;
    }

    void setName(String name) {
        this.name = name;
    }

    String getDescription() {
        return description;
    }

    void setDescription(String description) {
        this.description = description;
    }


}