Java - Pair

Java Pair 共有3个包可以实现:

javafx.util 
org.apache.commons.lang3.tuple
Vavr

一般的,在项目中推荐使用 Apache 包

import org.apache.commons.lang3.tuple.ImmutablePair;
import org.apache.commons.lang3.tuple.Pair;

代码实例

Pair pair = new MutablePair("aa","bb");
System.out.println("left:" + pair.getLeft() + ",right:" + pair.getRight());
System.out.println(pair.getKey());
System.out.println(pair.getValue());
System.out.println(pair.toString());
System.out.println(pair.toString());

Pair[] pairArr = new Pair[]{
    Pair.of("a","1"),
    Pair.of("b","2"),
    Pair.of("c","3")
};
int i = 1;
for (Pair _pair : pairArr){
    System.out.println("----------- " + i + " -----------");
    System.out.println(_pair.getLeft());
    System.out.println(_pair.getRight());
    System.out.println(_pair.getValue());
    System.out.println(_pair.toString());
}

结果:

left:aa,right:bb
aa
bb
(aa,bb)
(aa,bb)
----------- 1 -----------
a
1
1
(a,1)
----------- 2 -----------
b
2
2
(b,2)
----------- 3 -----------
c
3
3
(c,3)

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