如何基于java随机获取不重复数值

 public void getValue(ArrayList<Integer> mArrayList){
  	Random mRandom = new Random();
  	int a = mRandom.nextInt(mArrayList.size());
  	
  	int value = mArrayList.get(a);
  	System.out.println(value + "");
  	mArrayList.remove(a);
  }

package com.xiaoqiu.test;

import java.util.ArrayList;
import java.util.Random;

public class Test {
  public static void main(String[] args) {
  	ArrayList<Integer> mArrayList = new ArrayList<Integer>();
  	mArrayList.add(0);
  	mArrayList.add(1);
  	mArrayList.add(2);
  	mArrayList.add(3);
  	
  	Test mTest = new Test();
  	mTest.getValue(mArrayList);
  	mTest.getValue(mArrayList);
  }
  
  public void getValue(ArrayList<Integer> mArrayList){
  	Random mRandom = new Random();
  	int a = mRandom.nextInt(mArrayList.size());
  	
  	int value = mArrayList.get(a);
  	System.out.println(value + "");
  	mArrayList.remove(a);
  }
}