java constructor

It's a bit more long-winded, but you can achieve the same effect with multiple constructors:

C++

thing(int required, int optional = 3) {
  field1 = required;
  field2 = optional;
}

Java

thing(int required, int optional) {
  field1 = required;
  field2 = optional;
}
thing(int required) {
  this(required, 3);
}

[This second form works in C++ too!]

Peter
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