StandardOpenOption.CREATE:如果文件不存在则创建 StandardOpenOption.CREATE_NEW:创建新文件,如果文件已存在则失败 StandardOpenOption.WRITE:以写入方式打开 StandardOpenOption.APPEND:追加写入(不覆盖原有内容) StandardOpenOption.TRUNCATE_EXISTING:
static Path write(Path path, byte[] bytes, OpenOption... options):将字节数组写入文件。 static Path write(Path path, Iterable<? extends CharSequence> lines, Charset cs, OpenOption... options):将行写入文件。 5. 文件属性的获取与修改 static boolean exists(Path path, LinkOption... options):检查...
Files.writeString(Path path, CharSequence cs) //写入一个字符序列,可以是String、StringBuffer、StringBuilder、Char[] Files.writeString(Path path, CharSequence cs, Charset charset) //指定编码字符集 以上3个方法均可在末尾指定参数个数可变的的可选参数OpenOption,常用的值: StandardOpenOption.APPEND 追加 St...
importjava.nio.file.Files; importjava.nio.file.Path; importjava.nio.file.Paths; importjava.nio.file.StandardOpenOption; publicclassFilesExampleWithOptions{ publicstaticvoidmain(String[]args){ Path path=Paths.get("example.txt"); try(InputStreaminputStream=Files.newInputStream(path, StandardOpenOption...
static Path write(Path path, byte[] bytes, OpenOption… options) 将字节写入文件。 public static void main(String[] args) throws IOException { Path path = Paths.get("E:\\a.java"); Path path1 = Paths.get("E:\\b.java"); List<String> strings = Files.readAllLines(path); ...
@Test public void givenExistingPath_whenCreateNewFile_thenCorrect() throws IOException { assertFalse(Files.exists(Paths.get(HOME, "newfile.txt"))); Files.write(path, DUMMY_TEXT.getBytes(), StandardOpenOption.CREATE); assertTrue(Files.exists(path)); } We can also use the option CREATE_NEW, ...
importjava.nio.file.StandardOpenOption; publicclassBufferedWriterExample{ publicstaticvoidmain(String[]args){ Path path=Paths.get("example.txt"); try(BufferedWriterwriter=Files.newBufferedWriter(path)){ writer.write("Hello, World!"); writer.newLine();// 写入换行符 ...
bytes, params Java.Nio.FileNio.IOpenOption[]? options); Parameters path IPath the path to the file bytes Byte[] options IOpenOption[] options specifying how the file is opened Returns IPath the path Attributes RegisterAttribute Remarks Java documentation for java.nio.file.Files.write(...
Files.write(Paths.get(filepath), content.getBytes(), StandardOpenOption.APPEND); 1. 7.总结 本文我们展示了 6 种写入文件的方法,这 6 种方法总共分为 3 类:字符流写入、字节流写入和Files类写入。其中操作最便利的是Files类,但它的性能不怎么好。如果对性能有要求就推荐使用带有缓存区的流来完成操作,如...
学习使用Files.writeString(path,string,options)方法。此API已在Java 11中引入。 writeString()方法 java.nio.file.Files类具有两个重载的 static 静态方法将内容写入文件。 writeString 1 2 3 publicstaticPath writeString(Path path, CharSequence csq, OpenOption... options)throwsIOException ...