File类_构造函数

import java.io.File;

public class FileDemo {
    public static void main(String[] args) {
        constructorDemo();
    }
    public static void constructorDemo() {
        //可以将一个已存在或不存在的文件或在目录封装成file对象
        File f1= new File("F:\\B.txt");
        
        File f2 = new File("F:\\","B.txt");
        
        File f = new File("F:\\");
        File f3 = new File(f,"B.txt");
        
        File f4 = new File("F:"+File.separatorChar+"b.txt");//File.separator获得分隔符
        System.out.println(f4);
    }
}