java BufferedReader和InputStreamReader的区别
BufferedReader:
Read text from a character-input
stream, buffering characters so as to provide for the
efficient reading of characters, arrays, and lines.
InputStreamReader:
An InputStreamReader is a bridge from byte streams to
character streams: It reads bytes and decodes them
into characters using a specified charset.
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程序执行时会顺序经过loading、linking、initialization三个步骤
1. loading：查找类或接口的二进制文件
2. linking：装入类或接口的二进制文件，合为JVM的运行状态，使其可以被执行。此过程包括三个子过程：verification, preparation, and
resolution of symbolic references
3. initialization： ......
定义一个native 方法：
package ext;
import java.util.Hashtable;
public class TestJNI
{
static
{
System.loadLibrary("dllfile");
}
public TestJNI()
{
......
public static void main(String[] args){
SimpleDateFormat da = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
Calendar calendar = Calendar.getInstance();
Date date = calendar.getTime();
String aimTime ="2010-02-03 17:30:00.000";
int count = 0;
Date aimDate = d ......
ubuntu下用java直接用FileWriter写入到一个txt文件中之后，由于默认编码的缘故，不能使用gedit打开该txt。
在将String写入到txt之前，先转换一下编码，就可以解决问题。
实例代码如下：
import java.io.FileWriter;
import java.io.IOException;
public class testcode {
public static void main(String[] ......
