java scala混排

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package com.examples.infoworld.helloword;

public class Cal {
    public int add(int a,int b){
        return a+b;
    }
}


import com.dataartisans.examples.infoworld.helloword.Cal

object TestApp {
  def main(args: Array[String]): Unit = {
    print(new Cal().add(2,4))
  }
}