importjava.io.File;importjava.io.FileNotFoundException;importjava.util.Scanner;publicclassReadCodeFile{publicstaticvoidmain(String[]args){// 创建File对象Filefile=newFile("path/to/your/codefile.java");try{// 创建Scanner对象Scannerscanner=newScanner(file);// 逐行读取文件内容while(scanner.hasNextLine...
此外,由源码可知,FileReader的读取字符串的功能是通过转换流InputStreamReader类实现的:首先InputStreamReader包装了一个FileInputStream从文件读取字节数据,再将读取到的字节数据转换为字符。而FileReader继承了InputStreamReader,从而也获得了该功能。我们截取该类的其中一个构造方法的代码出来: publicFileReader(String fileNa...
示例Code public class Demo01 { public static void main(String[] args) { String str = File.pathSeparator; System.out.println(str); char ch = File.pathSeparatorChar; System.out.println(ch); String str2 = File.separator; System.out.println(str2); char ch2 = File.separatorChar; System.ou...
import java.io.File; import java.time.Instant; import java.time.LocalDateTime; import java.time.ZoneId; public class TestFile { public static void main(String[] args) { File f = new File("d:/aaa/bbb.txt"); System.out.println("文件构造路径:"+f.getPath()); System.out.println("文件...
输入字符流:Reader抽象类,close(),read(),read(char[]) FileReader构造函数FileReader(File),FileReader(str) IO异常处理有两种方式,一种是throw Exception,一种是try...catch...finally JDK1.7优化后的try-with-resource语句,try(声明资源)会自动关闭
Java 复制代码 999 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288...
printStackTrace(); } } public static void main(String[] args) { generateQRCode(new File("smt.png"), "淑玫唐家居网"); } 读取二维码 /** * @param file 读取二维码的文件名 * @return void * */ public static void readQRCode(File file) { MultiFormatReader reader = new MultiFormatReader...
The code example reads text from thethermopylae.txtfile. var fileName = "src/main/resources/thermopylae.txt"; In thefileNamevariable, we store the path to the file. try (BufferedReader br = new BufferedReader( new FileReader(fileName, StandardCharsets.UTF_8))) { ...
PipedReader PipedWriter PrintStream PrintWriter PushbackInputStream PushbackReader RandomAccessFile Reader SequenceInputStream SerialAttribute SerializablePermission StreamCorruptedException StreamTokenizer StringBufferInputStream StringReader StringWriter SyncFailedException ...
可以对使用 DataInputStream 进行按原文输入的程序进行本地化,方法是用合适的 BufferedReader 替换每个 DataInputStream。 为了指定文件的编码方式,再进入如下修改: //BufferedReader in = new BufferedReader(new FileReader(saveFilename)); BufferedReader in = new BufferedReader(new InputStreamReader(new FileInput...