Usage of nextint in java

NextInt() in Java is a method of the Scanner class, used to read integer data from the console. The usage is as follows: Create a Scanner object and initialize it to read data from the console. Call scanner.nextInt() to read the next whitespace-delimited integer. Assign the read integer to a variable.

Usage of nextInt() in Java

##nextInt() is JavaScanner Built-in method of class, used to read integer data from the console. It reads the next whitespace-delimited integer from the input stream and returns it as an int value.

Usage:

<code class="java">Scanner scanner = new Scanner(System.in);
int number = scanner.nextInt();</code>

In the above code:

• new Scanner(System.in) Create A new Scanner object that reads input from the console (standard input).
• scanner.nextInt() Reads the next integer value from the console and assigns it to variable number.

Usage example:

<code class="java">// 从控制台读取一个整数
int number = scanner.nextInt();

// 在程序中使用已读入的整数
System.out.println("您输入的数字是：" + number);</code>

Notes:

• nextInt() All leading whitespace characters (spaces, tabs, newlines) will be skipped.
If there is no integer in the input stream, or the input integer exceeds the range of
• int, nextInt() will throw an exception.
Before using
• nextInt(), you must ensure that the input stream has been initialized with a Scanner object.
You should close the
• Scanner object after you are finished using it to free up system resources.

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