There are several forms of construction methods of File class in Java

File objects represent files and directories that actually exist on the disk.

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The File class has the following forms of construction methods:

1. Through the given parent Abstract pathname and subpathname strings create a new File instance.

File(File parent, String child);

2. Create a new File instance by converting the given pathname string into an abstract pathname.

File(String pathname)

3. Create a new File instance based on the parent pathname string and child pathname string.

File(String parent, String child)

4. Create a new File instance by converting the given file: URI into an abstract pathname.

File(URI uri)

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Code implementation:

package com.dhb.file;
import java.io.File;
import java.io.IOException;
/**
 * @author DSHORE / 2018-6-22
 *
 */
public class Demo1 {
  public static void main(String[] args) throws IOException {
    File file = new File("F:/a.txt");//指定路径  [构造函数]
    file.createNewFile();//创建文件（空文件）  [方法]    
    File files = new File("F:\","b.txt");//第一个参数是路径，第二个参数是要创建文件的文件名  [构造函数]
    files.createNewFile();//创建文件（空文件）  [方法]
  }
}

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