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FileDemo.java
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package com.test.basic.chapter7;
import java.io.File;
import java.io.IOException;
/**
* Created by beigui on 2016/2/18.
* 功能：File类的基本应用
*/
public class FileDemo {
public static void main(String[] args) {
File file = new File("D:/", "test.txt");
if (file.exists()) {
file.delete();
System.out.println("文件已删除");
} else {
try {
file.createNewFile();
System.out.println("文件已创建");
System.out.println("文件长度：" + file.length());
System.out.println("文件名：" + file.getName());
} catch (IOException e) {
e.printStackTrace();
}
}
}
}