Java Scanner nextLine（）方法与示例

àì夳堔傛蜴生んèń 2023-03-05 15:53 32阅读 0赞

## 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][https_www.includehelp.com_java_scanner-nextline-method-with-example.aspx]

[https_www.includehelp.com_java_scanner-nextline-method-with-example.aspx]: https://www.includehelp.com/java/scanner-nextline-method-with-example.aspx