掃描儀類nextLine()方法 (Scanner Class nextLine() method)

• nextLine() method is available in java.util package.

  nextLine()方法在java.util包中可用。

• nextLine() method is used to get the skipped line.

  nextLine()方法用于獲取跳過的行。

• nextLine() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  nextLine()方法是一種非靜態方法，只能通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

• nextLine() method may throw an exception at the time of returning a new line.

  nextLine()方法在返回新行時可能會引發異常。

  • NoSuchElementException: This exception may throw when no line exists.NoSuchElementException ：不存在任何行時，可能引發此異常。
  • IllegalStateException: This exception may throw when this Scanner is not opened.IllegalStateException ：如果未打開此掃描器，則可能引發此異常。

Syntax:

句法：

public String nextLine();

Parameter(s):

參數：

• It does not accept any parameter.

  它不接受任何參數。

Return value:

返回值：

The return type of the method is String, it returns skipped line.

該方法的返回類型為String ，它返回跳過的行。

Example:

例：

// Java program to demonstrate the example // of String nextLine() method of Scanner import java.util.*;public class NextLineOfScanner {public static void main(String[] args) {String str = "Hi, true \n IncludeHelp! 8 + 2.0f = 10.0f";// Instantiate Scanner with the // given strScanner sc = new Scanner(str);// Display ScannerSystem.out.println("sc.nextLine(): " + sc.nextLine());// Display NextLineSystem.out.println("sc.nextLine(): " + sc.nextLine());// close the scannersc.close();} }

Output

輸出量

sc.nextLine(): Hi, true sc.nextLine(): IncludeHelp! 8 + 2.0f = 10.0f

翻譯自: https://www.includehelp.com/java/scanner-nextline-method-with-example.aspx

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