霍林河吧:java程序中的错误
来源:百度文库 编辑:中科新闻网 时间:2024/05/04 22:09:03
import java.io.*;
public class FileTest {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
File mu= new File("C:\\Test02");
File file = new File(mu,"help.txt");
System.out.println(file.getAbsolutePath());
System.out.println(file.exists());
String aa=file.getName();
System.out.println(aa);
mu.mkdirs();
file.createNewFile();
}
上面为什么file.createNewFile();总报错
public class FileTest {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
File mu= new File("C:\\Test02");
File file = new File(mu,"help.txt");
System.out.println(file.getAbsolutePath());
System.out.println(file.exists());
String aa=file.getName();
System.out.println(aa);
mu.mkdirs();
file.createNewFile();
}
上面为什么file.createNewFile();总报错
没有处理异常,需要加try catch
public static void main(String[] args) {
// TODO Auto-generated method stub
File mu= new File("C:\\Test02");
File file = new File(mu,"help.txt");
System.out.println(file.getAbsolutePath());
System.out.println(file.exists());
String aa=file.getName();
System.out.println(aa);
mu.mkdirs();
try {
file.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}