パーシャルファンクション

Main$.java

import scala.Function2;
import scala.Predef.;
import scala.Serializable;
import scala.runtime.AbstractFunction2;
import scala.runtime.BoxesRunTime;

public final class Main$
{
  public static final  MODULE$;

  static
  {
    new ();
  }

  public void main(String[] args)
  {
    Predef..MODULE$.println(
      BoxesRunTime.boxToBoolean(
        test(new AbstractFunction2() {
               public static final long serialVersionUID = 0L;
               public final boolean apply(String x$1, String x$2) { return x$1.endsWith(x$2); }  
             }
        )
      )
    );
  }
  public boolean test(Function2<String, String, Object> f) { return BoxesRunTime.unboxToBoolean(f.apply("foo", "o")); } 
  private Main$() { MODULE$ = this; }

}

Main.scala

object Main {
  def main(args: Array[String]): Unit = {
    println(test(_.endsWith(_)))
  }
  def test(f: (String,String) => Boolean): Boolean = f("foo", "o")
}