Java 去除文本 空格 換行符

​package game;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;

public class 去除文本中的換行符和空格 {
    public static void main(String[] args) {
        User("論文.txt","New論文.txt");
    }
    public static void User(String file,String NewFile) {
        try(BufferedReader br =
                new BufferedReader(
                        new FileReader(file));
            BufferedWriter bw =
                new BufferedWriter(
                        new FileWriter(NewFile)
                )){

            char[] x = new char[1024];
            int len = -1;
            String ex;



            while((len = br.read(x)) != -1){

		/**
		試過讓x的緩衝只有一個單位,然後嘗試判斷x是否爲空格
		失敗了
		*/
                ex = String.valueOf(x).replace(" ","");//去除空格
                ex = ex.replace("\r\n","");//去除換行
                System.out.println(ex);

                bw.write(ex);
            }

        }catch (Exception e){
            e.printStackTrace();
        }
    }
}
​