import java.io.*;public class CText {
public static void main(String[] args) {
String filename="H:\\HelloWorld.java";
try{
File f=new File(filename);
BufferedWriter out=new BufferedWriter(new FileWriter(filename));//语句1
if(f.exists())
{
f.delete();
}
else
{
//把语句1放这里就可以了,为什么呢?
f.createNewFile();
out.write("但愿人长久");
out.close();
}
}
catch(IOException e)
{
e.printStackTrace();
}
}}