Java: Class.this

Question

I have a Java program that looks like this.

public class LocalScreen {

   public void onMake() {
       aFuncCall(LocalScreen.this, oneString, twoString);
          


        

Answer 1

I know what is your confusion.I am encounter the problem just now, it should have special scene to distinguish them.

class THIS {
  def andthen = {
    new THIS {
      println(THIS.this.## + ":inner-THIS.this.##")
      println(this.## + ":inner-this.##")
      new THIS {
        println(THIS.this.## + ":inner-inner-THIS.this.##")
        println(this.## + ":inner-this.##")
      }
    }
  }
  def getInfo = {
    println(THIS.this.## + ":THIS.this.##")
    println(this.## + ":this.##")
  }
}

You can see the diff between THIS.this and this in new THIS operation by hashcode( .## )

test in scala console :

scala> val x = new THIS
x: THIS = THIS@5ab9b447

scala> val y = x.andthen
1522119751:inner-THIS.this.##
404586280:inner-this.##
1522119751:inner-inner-THIS.this.##
2027227708:inner-this.##
y: THIS = THIS$$anon$1@181d7f28

scala> x.getInfo
1522119751:THIS.this.##
1522119751:this.##

THIS.this always point to outer THIS class which is refer by val x,but this is beyond to anonymous new operation.