package use;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.util.HashMap;

import java.util.Scanner;

public class test {

public static void main(String[] args) {

// TODO Auto-generated method stub

/*String filePath = "E:\\java-study\\Java\\src\\use\\newone.txt";

readTxtByScanner(filePath);*/

}

/*public static void readTxtFile(String filePath){

double all=0;

HashMap mapa= new HashMap();

try {

String encoding="GBK";

File file=new File(filePath);

if(file.isFile() && file.exists()){ //判断文件是否存在

InputStreamReader read = new InputStreamReader(

new FileInputStream(file),encoding);//考虑到编码格式

BufferedReader bufferedReader= new BufferedReader(new FileReader(file),5*1024*1024);

String lineTxt = null;

while((lineTxt = bufferedReader.readLine()) != null){

String[] getint = lineTxt.split(" ");

String getoneint = getint[1];

//int a = Integer.parseInt(getoneint);

//all+=a;

mapa.put(getint[1],1);

System.out.println(lineTxt);

}

read.close();

}else{

System.out.println("找不到指定的文件");

}

} catch (Exception e) {

System.out.println("读取文件内容出错");

e.printStackTrace();

}

System.out.println(mapa.size());

}*/

/*public static void readTxtByScanner(String fileName) {

FileInputStream fileInputStream = null;

Scanner scanner = null;

try {

fileInputStream = new FileInputStream(fileName);

scanner = new Scanner(fileInputStream, "UTF-8");

while (scanner.hasNext()) {

String line = scanner.nextLine();

System.out.println(line);

}

} catch (FileNotFoundException e) {

e.printStackTrace();

} finally {

if (fileInputStream != null) {

try {

fileInputStream.close();

} catch (IOException e) {

e.printStackTrace();

}

}

if (scanner != null) {

scanner.close();

}

}

}*/

}