No Fear.

▶ wait, notify, notifyAll에 의한 실행순서의 동기화class NewsPaper {String todayNews;boolean isTodayNews = false;public void setTodayNew(String news) {todayNews = news;isTodayNews = true;synchronized(this) {notifyAll();// 모두 깨운다.}}public String getTodayNews() {if(isTodayNews == false){try{synchronized(this) {wait(); // 기다려라.}} catch(InterruptedException e) {e.printStackTrace();}}return todayNews;}} class Ne..

JAVA Language 2012. 9. 21. 01:44

▶ synchronized 선언에 의한 동기화 블록의 구성class IHaveTwoNum {int num1=0;int num2=0;public void addOneNum1() {num1 += 1;}public void addTwoNum1() {num1 += 2;}public void addOneNum2() {num2 += 1;}public void addTwoNum2() {num2 += 2;}public void showAllNums() {System.out.println("num1 : " + num1);System.out.println("num2 : " + num2);}} class AccessThread extends Thread {IHaveTwoNum twoNumInst;public AccessTh..

JAVA Language 2012. 9. 20. 00:56