How to avoid applied lazily Lists.transform in guava?

Question

Map map = Maps.newHashMap();
map.put(\"test\",\"123\");
map.put(\"fuyou001\",\"456\");
map.put(\"id\",1         


        

Answer 1

Using an ImmutableList will force the values to be computed eagerly, and thus, no need for an extra copy afterwards. This is perhaps a more elegant solution:

list = ImmutableList.copyOf(Lists.transform(list, 
  new Function, Object>() {
  @Override
  public Object apply(@Nullable Map input) {
    System.out.println("test:" + input);
    return input;
  }
}));
System.out.println(list);`