In short, if you want to write a map of e.g. constants in Java, which in e.g. Python and Javascript you would write as a literal,
T<String,String> CONSTANTS =
{
"CONSTANT_NAME_0": CONSTANT_VALUE_0 ,
"CONSTANT_NAME_1": CONSTANT_VALUE_1 ,
"CONSTANT_NAME_2": CONSTANT_VALUE_2 ,
//...
} ;
is there a Class
or any preset Object
that you can use for writing a data structure like that?
I like to do it this way:
Map map = new HashMap() {{
put("foo", "bar");
put(123, 456);
}};
The double {{ }} are an instance initialization block. They are a bit unusual but they are useful. No need for libraries or helpers.