sonar scanner

First, we should introduce the package import Java.util.Scanner; It is a simple text scanner that can use regular expressions to parse basic types and strings. Scanner uses the separator mode to decompose its input into tokens, which, by default, match the delimiter pattern. You can then use a different next method to convert the resulting token to a different type of value.Scanner reader=new

Scanner in the Java.util package, you need to import java.util.*, or import java.util.Scanner;How it works: by creating a Scanner object with new, scanner needs to pass in a system.in as a parameter, which we can consider to be the scanner of the data through its internal mechanism to wrap system.in. The

Using the scanner class makes it easy to get the user's keyboard input, scanner is a regular expression-based text scanner that resolves basic type values and string values from files, input streams, and strings. The scanner class provides multiple constructors, with different constructors that accept files, input stre

Scanner is a new simple text scanner that was not there before JDK 5.0.publicfinalclass Scanner extends Object implements IteratorString>, Closeable Visible, scanner is no subclass.In the JDK API about scanner provides a much more constructive method and method. So now list

Use of the Scanner class(Accept keyboard input)Java.util.Scanner is a new feature of JAVA5, and the main function is to simplify text scanning. The most practical part of this class is to get console input, other features are very chicken, although the Java API documentation lists a number of API methods, but not very much."Code Sample"1 Public Static voidMain (string[] args) {2 test01 ();3 test02 ();4 }5 6 Public Static voidtest02 () {7Scan

tips for scanning in OS X 1, the use of "Software Update" Automatic installation of Third-party scanner/printer software updates. 2, connect the USB scanner can automatically generate a scanner/print queue. 3. You can share scanners that are connected via USB with other Macs in your home network. 4, you can through a variety of application software for scanni

Next (); Gets the string from the console, if the string contains a space, only gets the first string to be received. For example: Enter Hello I am a chinese!, receive only hello.Nextline (); Gets a string from the console, which can contain spaces, with a carriage return as the receive end flag. For example: input hello I am a chinese!, received is hello I am a chinese!.How do you get Next (); methods can also receive strings that include spaces like nextline ()?There is a Hasnext () method in

Let's look at the exact words in the Java API documentation:当扫描器抛出 InputMismatchException 时，该扫描器不会传递导致该异常的标记，因此可以通过其他某种方法来获取或跳它。 这是java API文档中的原话。In fact it means: "'If you enter the a character when the Nextint method executes, and you do not successfully parse an integer at this time, your input will not be ignored. Because it might be able to be parsed by other formats.Then your program entered a, an exception, number is assigned a value of 100, start the next loop, but the