During Java application development, we need to read the contents of a file into a string in many situations such as processing configuration files, parsing data, or handling text-based resources. In this Java tutorial, we will explore different ways toread a text file into Stringin Java from ...
Rarely in my career have I written significant amounts of Java, so when Idouse it I’m always learning new things. I thought this unique way to use Scanner to read a text file into a string was great: import java.util.Scanner; String contents = new Scanner(new File(fileName)).useDeli...
Printing lines to the console consumes additional resources. Therefore, we use theStringBuilderto build the output string and print it in one operation. This is an optional optimization. TheSystem.lineSeparatorreturns the system-dependent line separator string. Read text file with Files.readAllLines The...
*/publicclassTxtHandler{privatestaticfinalLoggerlogger=LoggerFactory.getLogger(TxtHandler.class);publicstaticvoidmain(String[]args){StringfilePath="filePath";readText(filePath);}publicstaticvoidreadText(StringfilePath){Filefile=newFile(filePath);if(file.isFile()&&file.exists()){try{Stringtxt=" ";...
read.close();returnreadList; }catch(Exception e) { e.printStackTrace(); }returnnull; }//改变时间的格式publicstaticString parseDate(String dateStr)throwsjava.text.ParseException{ SimpleDateFormat input_date=newSimpleDateFormat("dd/MMM/yyyy:HH:mm:ss Z", Locale.ENGLISH); ...
Next, let’s read a text file into tokens using a StreamTokenizer. The way the tokenizer works is – first, we need to figure out what the next token is – String or number; we do that by looking at the tokenizer.ttype field. Then, we’ll read the actual token based on this type...
读取文件20File file =newFile("d:/new4.txt");21InputStreamReader read =newInputStreamReader(newFileInputStream(file),"utf-8");//考虑到编码格式22BufferedReader bu =newBufferedReader(read);23//2.拼接字符串24String lineText =null;25String insert = "INSERT INTO [report].[dbo].[process] (...
*/publicclassTxtHandler{privatestaticfinal Logger logger=LoggerFactory.getLogger(TxtHandler.class);publicstaticvoidmain(String[]args){String filePath="filePath";readText(filePath);}publicstaticvoidreadText(String filePath){File file=newFile(filePath);if(file.isFile()&&file.exists()){try{String tx...
读取文件20File file =newFile("d:/new4.txt");21InputStreamReader read =newInputStreamReader(newFileInputStream(file),"utf-8");//考虑到编码格式22BufferedReader bu =newBufferedReader(read);23//2.拼接字符串24String lineText =null;25String insert = "INSERT INTO [report].[dbo].[process] (...
Returns a string representation of the object. (Inherited from Object) TransferTo(Writer) Reads all characters from this reader and writes the characters to the given writer in the order that they are read. (Inherited from Reader) UnregisterFromRuntime() (Inherited from Object) Wait() ...