show 3D text on canvas (unity5)

hi
i need to show some text NOT ON UI screen
i already have a script on C#
but i need to learn how to do this on java

here is my code on C# (but need thiso in java)

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.UI;
3. using System.Collections;
4. public class showtext : MonoBehaviour {
5. public Text score_Text;
6. public int highScore = 0;
7.      void Update(){
8.          highScore = PlayerPrefs.GetInt("HighScore");
9.         score_Text.text = highScore.ToString();
10.      }
11. }

in other word how to do this in java please help.
i will apreciate so much.

 

any idea please ?