What is scanner in java

The scanner in java is a class, a new utility for scanning input text; when writing a Java program in Eclipse, it can be used if the variables need to be entered manually. scanner class.

scanner in java is a class that is a new utility for scanning input text. This article will give you a detailed introduction, and interested friends can come and learn more.

When we write a Java program in Eclipse, If our variables need to be entered manually, we can use the scanner class.

#Scanner class, a new utility for scanning input text.

Since any data must be retrieved through capturing groups of the same schema or by using an index to retrieve individual parts of the text.

You can then use regular expressions in conjunction with methods for retrieving data items of specific types from the input stream.

In this way, in addition to using regular expressions, the Scanner class can also arbitrarily analyze data of strings and basic types (such as int and double).

With Scanner, you can write a custom parser for any text content you want to process.

PS: In Eclipse, you must import java.util.Scanner under the package at the beginning; otherwise, the scanner cannot be called.

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