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This article mainly explains "how to realize the implicit conversion between JavaMap and ScalaMap of Scala". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to realize the implicit conversion between JavaMap and ScalaMap of Scala.

Tuple zipper operation

In fact, two Array are merged into one Tuple, which is realized through the zip () method of Array. Note here that the length of the two arrays should be the same, otherwise the data will be lost:

Code example:

Package com.hadoop.ljs.spark.study

/ * * @ author: Created By lujisen * @ company ChinaUnicom Software JiNan * @ date: 2020-02-08 19:59 * @ version: v1.0 * @ description: com.hadoop.ljs.spark.study * / / * the zip () method of the Array array combines two numbers into one tuple*/object TupleZip {def main (args: Array [String]): Unit = {val nameArray=Array ("ljs1", "ljs2", "ljs3")

Val nameArray2=Array ("ljs1", "ljs2", "ljs3", "ljs4") val ageArray=Array (17, 18, 19) val nameAgeArray=nameArray.zip (ageArray)

Println ("two array elements are the same") nameAgeArray.foreach {x = > println ("name: + x.room1 +" age "+ x.room2)}

Println ("two array elements are different") val nameAgeArray2=nameArray2.zip (ageArray) for ((name,age) 20, "ljs5"-> 22)

Val javaMap2 = new util.HashMap [String,Int] (scalaAttrMap)

Println (javaMap2)}}

At this point, I believe you have a deeper understanding of "how to realize the implicit conversion between JavaMap and ScalaMap of Scala". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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