c0a4a5937675001d1e98a7c17f0c1d66

java程序设计教程的源码

//【例10-1】  利用File类获得文件的属性信息。
//程序清单10-1: FileDemo.java
import java.io.File;

class FileDemo {
	static void p(String s) {
		System.out.println(s);
	}

	public static void main(String args[]) {
		File f1 = new File("/java/a.txt");
		p("File Name:" + f1.getName());
		p("Path:" + f1.getPath());
		p("Abs Path:" + f1.getAbsolutePath());
		p("Parent:" + f1.getParent());
		p(f1.exists() ? "exists" : "does not exist");
		p(f1.canWrite() ? "is writeable" : "is not writeable");
		p(f1.canRead() ? "is readable" : "is not readable");
		p("is" + (f1.isDirectory() ? " " : "not " + "a directory"));
		p(f1.isFile() ? "is normal file" : "might be a named pipe");
		p(f1.isAbsolute() ? "is absolute" : "is not absolute");
		p("File last modified:" + f1.lastModified());
		p("File size:" + f1.length() + "Bytes");
	}
}