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What is the equivalent of the C++ Pair<L,R> in Java?

Is there a good reason why there is no Pair<L,R> in Java? What would be the equivalent of this C++ construct? I would rather avoid reimplementing my own.

It seems that 1.6 is providing something similar (AbstractMap.SimpleEntry<K,V>), but this looks quite convoluted.

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26

The Java-mockery would have been fine if you had pointed to the Apache Commong Lang, which contains a Pair class.

haylem
– haylem

2012-02-29 09:10:22 +00:00
Commented Feb 29, 2012 at 9:10
6

Or you could just use SimpleImmutableEntry

CurtainDog
– CurtainDog

2012-06-28 01:40:22 +00:00
Commented Jun 28, 2012 at 1:40
The most common IDEs will generate an appropriate HashCode()/equals for you.

java-addict301
– java-addict301

2017-11-13 15:12:51 +00:00
Commented Nov 13, 2017 at 15:12
4

I agree. "Because this is Java" is a good answer. Remember that the Java language is intentionally deprived of certain (cough c++) features that are confusing to the average programmer. That is why Java does not allow you to redefine operators. Nor does it allow multiple inheritance. Bottom line is, if some stupid programmer is likely to abuse it, then Java will make it hard to do.

John Henckel
– John Henckel

2017-11-15 15:01:12 +00:00
Commented Nov 15, 2017 at 15:01

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What is the equivalent of the C++ Pair<L,R> in Java?

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