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package com.brianway.learning.java.multithread.supplement.example3;
/**
* Created by Brian on 2016/4/17.
*/
import java.text.SimpleDateFormat;
/**
* P293
* SimpleDateFormat类非线程安全
* 有时正常运行，有时报异常
*/
public class Run3_formatError {
public static void main(String[] args) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String[] dateStringArray = new String[] {
"2000-01-01", "2000-01-02", "2000-01-03", "2000-01-04", "2000-01-05",
"2000-01-06", "2000-01-07", "2000-01-08", "2000-01-09", "2000-01-10"
};
Thread0[] threads = new Thread0[10];
for (int i = 0; i < 10; i++) {
threads[i] = new Thread0(sdf, dateStringArray[i]);
}
for (int i = 0; i < 10; i++) {
threads[i].start();
}
}
}
/*
ThreadName = Thread-6报错了 日期字符串：2000-01-07 转换成的日期为1999-12-02
ThreadName = Thread-4报错了 日期字符串：2000-01-05 转换成的日期为2000-01-09
ThreadName = Thread-1报错了 日期字符串：2000-01-02 转换成的日期为1999-12-02
ThreadName = Thread-0报错了 日期字符串：2000-01-01 转换成的日期为2000-01-05
ThreadName = Thread-5报错了 日期字符串：2000-01-06 转换成的日期为1999-12-03
Exception in thread "Thread-3" java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Long.parseLong(Long.java:601)
at java.lang.Long.parseLong(Long.java:631)
at java.text.DigitList.getLong(DigitList.java:195)
at java.text.DecimalFormat.parse(DecimalFormat.java:2051)
at java.text.SimpleDateFormat.subParse(SimpleDateFormat.java:1869)
at java.text.SimpleDateFormat.parse(SimpleDateFormat.java:1514)
at java.text.DateFormat.parse(DateFormat.java:364)
at com.brianway.learning.java.multithread.supplement.example3.Thread0.run(Thread0.java:22)
*/