fill types of target list from sourse list ones with same name

TwoTypeArrayTest.java

package com.test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.junit.Before;
import org.junit.Test;

public class TwoTypeArrayTest {

  private static final String TYPE1 = "type";
  private List<ClassA> listA = new ArrayList<ClassA>();
  private List<ClassB> listB = new ArrayList<ClassB>();
  private ClassB b1;
  private ClassB b2;

  @Before
  public void setup(){
    listA.add(new ClassA("name1", TYPE1));
    listA.add(new ClassA("name2", "type2"));
    b1 = new ClassB("name1", null);
    listB.add(b1);
    b2 = new ClassB("name3", null);
    listB.add(b2);
  }

  @Test
  public void testAssignment() {
    fillTypes(listA, listB);
    assertEquals(TYPE1, b1.getType());
    assertNull(b2.getType());
  }

  private void fillTypes(List<ClassA> source, List<ClassB> target){
    final Map<String, String> sourceMap = new HashMap<String, String>();
    for (ClassA sourceObj : source) {
      sourceMap.put(sourceObj.getName(), sourceObj.getType());
    }

    for (ClassB targetObj : target) {
      final String name = targetObj.getName();
      if (sourceMap.containsKey(name)){
        targetObj.setType(sourceMap.get(name));
      }
    }
  }

}

class ClassB{

  private String name;
  private String type;

  ClassB(String name, String type) {
    this.name = name;
    this.type = type;
  }

  public String getName() {
    return name;
  }

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

  public String getType() {
    return type;
  }

  public void setType(String type) {
    this.type = type;
  }
}

class ClassA{

  private String name;
  private String type;

  ClassA(String name, String type) {
    this.name = name;
    this.type = type;
  }

  public String getName() {
    return name;
  }

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

  public String getType() {
    return type;
  }

  public void setType(String type) {
    this.type = type;
  }
}