重点看这一句:**This method may block while waiting for input to scan. **大意是此方法可能会在等待输入时阻塞。这样一解释就好办了,我们在循环体里面打印一下 hasNext() 方法的返回值看看: public static void main(String[] args) { Scanner s = new Scanner(System.in); boolean b; while(b = s....
程序1: package mian;import java.util.Scanner;public class mian { public static void main(String[] args) { // TODO Auto-generated method stub Scanner sc = new Scanner(System.in); int s=0; String str=null; while(sc.hasNext()){ if(sc.hasNextInt()){//判断是否是数字 s+=sc.nextInt(...
// Java program to illustrate the // hasNextLine() method of Scanner class in Java // without parameter import java.util.*; public class GFG1 { public static void main(String[] argv) throws Exception { String s = "gfg 2 geeks!"; // new scanner with the // specified String Object ...
程序1: packagemian;importjava.util.Scanner;publicclassmian {publicstaticvoidmain(String[] args) {//TODO Auto-generated method stubScanner sc =newScanner(System.in);ints=0;String str=null;while(sc.hasNext()){if(sc.hasNextInt()){//判断是否是数字s+=sc.nextInt();}else{str=sc.next();//...
* Returns true if this scanner has another token in its input. * This method may block while waiting for input to scan. * The scanner does not advance past any input. * * @return true if and only if this scanner has another token ...
The hasNextFloat() method returns true if the next token represents a valid number.The scanner is able to interpret digit groupings, such as using a comma for separating groups of 3 digits. The format of the groupings and the character used as a decimal point depend on the locale settings...
import java.util.Scanner;public class mian { public static void main(String[] args) { // TODO Auto-generated method stub Scanner sc = new Scanner(System.in);int s=0;String str=null;while(sc.hasNext()){ if(sc.hasNextInt()){//判断是否是数字 s+=sc.nextInt();}else{ str=sc.next(...
Java documentation forjava.util.Scanner.hasNext(java.lang.String). Portions of this page are modifications based on work created and shared by theAndroid Open Source Projectand used according to terms described in theCreative Commons 2.5 Attribution License. ...
import java.utihttp://l.Scanner; public class Test_hasNextInt { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Scanner sc = new Scanner(System.in); //关于hasNextInt判断后无限循环输出else项的解http://决办法 ...
Namespace: Java.Util Assembly: Mono.Android.dll Returns true if the next token in this scanner's input can be interpreted as a short value in the specified radix using the #nextShort method. C# 複製 [Android.Runtime.Register("hasNextShort", "(I)Z", "")] public bool InvokeHasNext...