1、從本地 data.txt 文本中讀取賬戶信息，模擬銀行不同賬戶之間的轉(zhuǎn)賬。

2、實(shí)現(xiàn)代碼如下：

package com.tiger.thread;import java.io.*; /*** 模擬銀行轉(zhuǎn)賬信息* 從本地 data.txt 文本中讀取賬戶信息* @author tiger* @Date 2017年7月26日 */ public class BankTest extends Thread{public BankTest(String name) {super(name);}public static void main(String[] args) {Bank bank = new Bank();Thread th1 = new Thread(bank,"1號(hào)轉(zhuǎn)賬線路-》");Thread th2 = new Thread(bank,"2號(hào)轉(zhuǎn)賬線路-》");Thread th3 = new Thread(bank,"3號(hào)轉(zhuǎn)賬線路-》");th1.start();th2.start();th3.start();} } /*** @author tiger* @Date 2017年7月26日*/ class Bank implements Runnable{String path = "D:\\Javac\\data.txt";int oneAccount;int twoAccount;int transfer = 100;BufferedReader reader;BufferedWriter writer;//在構(gòu)造器初始化，為賦值。public Bank() {try {reader = new BufferedReader(new FileReader(path));//讀取 比爾蓋茨 賬戶信息String oneAccount = reader.readLine();//讀取 巴菲特 賬戶信息String twoAccount = reader.readLine();//截取字符數(shù)字oneAccount = oneAccount.replaceAll("\\D", "");twoAccount = twoAccount.replaceAll("\\D", "");//將字符串解釋為 int。this.oneAccount = Integer.parseInt(oneAccount);this.twoAccount = Integer.parseInt(twoAccount);} catch (IOException e) {e.printStackTrace();}}@Overridepublic void run() {//同步業(yè)務(wù)邏輯synchronized ("1") {String name = Thread.currentThread().getName();//模擬 one 給 two 轉(zhuǎn)錢 turnoneAccount = oneAccount - transfer;twoAccount = twoAccount + transfer; //將轉(zhuǎn)賬后更新的數(shù)據(jù)(int類型的轉(zhuǎn)為String類型)存入data.txt中 String onestr = String.valueOf(oneAccount); String twostr = String.valueOf(twoAccount);try {//writer需要同步writer = new BufferedWriter(new FileWriter(path));writer.write("比爾蓋茨 = " + onestr + " (億美元);");writer.newLine();writer.write("巴菲特 = " + twostr + " (億美元);");writer.close();} catch (IOException e) {e.printStackTrace();}}} }

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