【IT168 技术文档】我把代码粘给大家，大家看测一下就知道下面两种方法种哪种方法的效率比较高：

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
public class IOTest {
/**
* @param args
*/
public static void main(String[] args) {
long cc=System.currentTimeMillis();
for(int i=0;i<1000;i++){
test1();
}
cc=System.currentTimeMillis()-cc;
System.out.println("test1="+cc);
cc=System.currentTimeMillis();
for(int i=0;i<1000;i++){
test2();
}
cc=System.currentTimeMillis()-cc;
System.out.println("test2="+cc);
}
private static void test1()
{
String file="test1.txt";
String message="asdfaksdjfalskdfjalksdjflkasjdfkajsdfkljasdlkfjasdlkf
jasdfjalksdjflasdjflasdjflasdfjlasdfjeqoiuiruqnakncaskn asjdfas ffjqwoerj";
FileOutputStream fos=null;
FileChannel fc=null;
try {
fos=new FileOutputStream(file,false);
fc=fos.getChannel();
byte [] src=message.getBytes("GBK");
fc.write(ByteBuffer.wrap(src));
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
finally
{
try {
if(null!=fos)
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
try {
if(null!=fc)
fc.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
private static void test2()
{
String file="test2.txt";
String message="asdfaksdjfalskdfjalksdjflkasjdfkajsdfkljasd
lkfjasdlkfjasdfjalksdjflasdjflasdjflasdfjlasdfjeqoiuiruqnakncaskn asjdfas ffjqwoerj";
FileOutputStream fos=null;
try {
fos=new FileOutputStream(file,false);
byte [] src=message.getBytes("GBK");
fos.write(src);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
finally
{
try {
if(null!=fos)
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}