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JavaSE/JavaIO/FileTest.java at master · goder/JavaSE · GitHub
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/*
* 功能：File类基本用法
* 1、创建
* 2、使用
*/
package
com
.
bj
.
io
;
import
java
.
io
.*;
public
class
FileTest
{
public
static
void
main
(
String
[]
args
) {
// //创建文件对象
// File file=new File("D:/aa.txt");
// //得到文件路径
// System.out.println("文件路径："+file.getAbsolutePath());
// //得到文件名
// System.out.println("文件名："+file.getName());
//
// if(file.exists()==false){
// System.out.println("File Not Exist");
// }
// //创建文件和文件夹
// File file=new File("D:/www/nb.txt");
// if(file.exists()==false){
// try {
// file.createNewFile();
// } catch (IOException e) {
// // TODO Auto-generated catch block
// e.printStackTrace();
// }
// }else{
// System.out.println("文件存在，不创建");
// }
//创建文件夹
File
files
=
new
File
(
"D:/www"
);
if
(
files
.
isDirectory
()){
System
.
out
.
println
(
"文件目录存在"
);
File
list
[]=
files
.
listFiles
();
for
(
int
i
=
0
;
i
<
list
.
length
;
i
++){
System
.
out
.
println
(
"文件名："
+
list
[
i
].
getName
());
}
}
else
{
files
.
mkdir
();
}
}
}
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