Java 创建文件

import java.io.File;
import java.io.IOException;

public class CreateFile {
    public static void main(String[] args) throws IOException {
        File file = new File("cpyFile2");
        if (file.createNewFile())
            System.out.println("文件创建成功！");
        else
            System.out.println("文件已存在！");
    }
}