扫描仪类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()方法用于获取跳过的行。

• 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()方法是一种非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

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

  nextLine()方法在返回新行时可能会引发异常。

  • NoSuchElementException: This exception may throw when no line exists.NoSuchElementException ：不存在任何行时，可能引发此异常。
  • IllegalStateException: This exception may throw when this Scanner is not opened.IllegalStateException ：如果未打开此扫描器，则可能引发此异常。

Syntax:

句法：

    public String nextLine();

Parameter(s):

参数：

• It does not accept any parameter.

  它不接受任何参数。

Return value:

返回值：

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

该方法的返回类型为String ，它返回跳过的行。

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 str
Scanner sc = new Scanner(str);
// Display Scanner
System.out.println("sc.nextLine(): " + sc.nextLine());
// Display NextLine
System.out.println("sc.nextLine(): " + sc.nextLine());
// close the scanner
sc.close();
}
}

Output

输出量

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

翻译自: https://www.includehelp.com/java/scanner-nextline-method-with-example.aspx