Object so that spaces can occur in strings that are read by the Scanner In the code above, the useDelimiter() method has been used to set the Scanner Until then, the try-catch structures can be copied exactlyĪs above, if you wish to use a Scanner object for file input. We will discuss the try-catch commands when exceptions are covered The following code will createĪ Scanner object that will be connected to an input stream that can read Throws an exception that must be handled. The other create() method that was used in Chapter 2, this create() Is a Scanner() constructor with a File object as an argument. Of methods of the Scanner class is given in Figure 4.27. To use methods that were not discussed in Chapter 2. In order to read data from a file with a Scanner object we will need ![]() Used to determine whether or not a file has been found with the specified Not use it at this time, the exists() method of a File instance can be The sequence of directories containing the file. If we wish toĬreate a File object that describes a file in a directory other than the oneĬontaining the Java program, we must call the constructor with a string argument that specifies the file’s complete path name-that is, one that lists ![]() In Chapter 11, we will describe how other objectsĬan use a file object to create a file in which to write data. If no suchįile exists, the File object stores information needed to create such a fileīut does not create it. Will obtain and store information about the ”riddles.txt” file in the sameĭirectory as the java code being executed, if such a file exists. Will need to use only the File() constructor in this section. ![]() Of the File class is given in the UML class diagram in Figure 4.26. Scanner object needs to create an input stream that is connected to the An instance of the java.io.File class stores information that a
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