我们可以使用File类的实例来表示一个本地text文件,然后使用相应的方法来读取文件的内容。 下面是一个使用File类读取本地text文件的示例代码: importjava.io.File;importjava.io.FileNotFoundException;importjava.util.Scanner;publicclassReadFileExample{publicstaticvoidmain(String[]args){try{Filefile=newFile("path...
StringfileName="example.txt";Filefile=newFile(fileName); 1. 2. 在上述代码中,我们通过传入文件名来创建一个File对象。如果txt文件与Java程序位于同一目录下,直接传入文件名即可。如果文件位于其他目录下,需要传入完整的文件路径。 使用Scanner类读取文件内容 接下来,我们使用Scanner类来读取文件的内容。Scanner类提...
var fileName = "src/main/resources/thermopylae.txt"; try (var scanner = new Scanner(new File(fileName))) { while (scanner.hasNext()) { String line = scanner.nextLine(); System.out.println(line); } } } The example reads a text file using aScanner. ...
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For example, the pattern "\\s+" will return no empty tokens since it matches multiple instances of the delimiter. The delimiting pattern "\\s" could return empty tokens since it only passes one space at a time. A scanner can read text from any object which implements the Readable ...
text/java 複製 {@code Scanner sc = new Scanner(new File("myNumbers")); while (sc.hasNextLong()) { long aLong = sc.nextLong(); } } </blockquote> The scanner can also use delimiters other than whitespace. This example reads several items in from a string: <blockquote> text/java...
Here is an example program to read a file line-by-line withScanner: ReadFileLineByLineUsingScanner.java packagecom.journaldev.readfileslinebyline;importjava.io.File;importjava.io.FileNotFoundException;importjava.util.Scanner;publicclassReadFileLineByLineUsingScanner{publicstaticvoidmain(String[]args)...
Scanner console =newScanner(System.in); You can also use the Scanner class to read input from a file. Instead of passing System.in to the Scanner class constructor, you pass a reference to a FileReader object. Here is an example:
The following examples show how to use java.util.Scanner. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. Example 1Source...