Scanner sc = new Scanner(System.in); int i = sc.nextInt(); As another example, this code allows long types to be assigned from entries in a file myNumbers: Scanner sc = new Scanner(new File("myNumbers")); while (sc.hasNextLong()) { long aLong = sc.nextLong(); } The...
in); System.out.print("请输入一个整数: "); int num = scanner.nextInt(); System.out.print("请输入一个字符串: "); String str = scanner.nextLine(); 请输入一个整数: 5 请输入一个字符串: Process finished with exit code 0 出现这种情况是因为 Scanner 类在处理输入时的一些特性。使用 sc...
intt=sc.nextInt(); /* the error maybe triggered in here :*/ sc.nextLine(); /*if we put the sc.nextLine() out of the if judge,then the the code will throw error * due to the:java.util.NoSuchElementException: No line found * well,this depend on the data in the input file:if ...
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); while (in.hasNext()) { int n = in.nextInt(); /* nextLine()是扫描器执行当前行,并返回跳过的输入信息,特别需要注意!!! 如果没有该行,则执行第一个in.nextLine()...
目录1.概述2.使用举例2.1.从不同的输入源读取数据2.2.next() 和 nextLine() 的区别2.3.读取大小已知的一维数组2.4.读取大小未知的一维数组2.5.读取长度大小已...
text/java 复制 {@code Scanner sc = new Scanner(new File("myNumbers")); while (sc.hasNextLong()) { long aLong = sc.nextLong(); } } </blockquote> The scanner can also use delimiters other than whitespace. This example reads several items in from a string: <blockquote>...
... I'm not so sure it's an error in my code so much as perhaps an error in my system variables somewhere? But if that's the case, wouldn't the commands javac and java also not be working? ... Scanner was introduced with Java 1.5, so my guess is that your system PATH is ...
importjava.util.*;publicclassScannerKeyBoardTest{publicstaticvoidmain(String[]args){System.out.println("请输入若干单词,以空格作为分隔");Scanner sc=newScanner(System.in);while(sc.hasNext()){System.out.println("键盘输入的内容是:"+sc.next());}System.out.println("执行吗");}} ...
INFO: SonarQube Scanner3.3.0.1492INFO: Java1.8.0_121 Oracle Corporation (64-bit) INFO: Linux3.10.0-862.el7.x86_64 amd64 INFO: User cache:/root/.sonar/cache INFO: SonarQube server6.7.6INFO: Default locale:"en_US", source code encoding:"UTF-8"INFO: Publish mode ...
import java.util.Scanner;public class MyClass { // your code here } 在这个示例中，import java....