public class FileDemo {
public static File file;
public static void main(String args[])
{
String s = args[0];
String f = "F:"+File.separator+"work"+File.separator+"60"+File.separator+"60.txt";
System.out.println("-->"+s+"<--");
System.out.println("开始运行");
if(s.equals("c"))
{
System.out.println("创建：检查文件是否存在");
boolean b = existsFile(f);
if(b){
System.out.println("文件已经存在");
}else{
System.out.println("文件不存在,可以创建");
createFile(f);
}
}else if(s.equals("d"))
{
System.out.println("删除：检查文件是否存在");
boolean b = existsFile(f);
if(b)
{
System.out.println("删除");
deleteFile(f);
}else{
System.out.println("文件不存在,无法删除");
}
}
getPath();
list();
listFiles();
}
public static void createFile(String f)
{
try {
file.createNewFile();
} catch (IOException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
}
public static void deleteFile(String f)
{
file.delete();
}
public static boolean existsFile(String f)
{
file = new File(f);
if(file.exists())
{
return true;
}else{
return false;
}
}
public static boolean isFile(String f)
{
if(file.isFile())
{
return true;
}else{
return false;
}
}
public static boolean isPath(String f)
{
if(file.isDirectory())
{
return true;
}else{
return false;
}
}
public static void getPath()
{
System.out.println(file.getPath());
System.out.println(file.getParent());
}
//列出目录
public static void list()
{
File file2 = new File("F:"+File.separator+"work");
String p[] = file2.list();
for(int i = 0; i < p.length ; i++)
{
System.out.println( p[i]);
}
}
//列出目录
public static void listFiles()
{
File file2 = new File("F:"+File.separator+"work");
File p[] = file2.listFiles();
for(int i = 0; i<p.length; i++)
{
System.out.println(p[i]);
}
}
