我需要帮助。我想询问用户是否要再试一次，但我的代码似乎有些问题，因为它无效。
public class TotoAzul
{
public static void main(String[] args)
{
Scanner keyboard = new Scanner(System.in);
int n1, n2, sum;
String answer;
do {
System.out.println("Enter number 1: ");
n1 = keyboard.nextInt();
System.out.println("Enter number 2: ");
n2 = keyboard.nextInt();
sum = n1 + n2;
System.out.println("Number 1\t" + "Number 2\t" + "Sum");
System.out.println("__________________________________");
System.out.println(n1 + "\t\t" + n2 + "\t\t" + sum);
System.out.println("Enter yes to continue or any other key to end");
answer = keyboard.nextLine();
keyboard.nextLine();
}
while(answer.equalsIgnoreCase("YES"));
}
}
当我运行它时，它会存储用户的答案，但程序不会重复。我该如何解决这个问题？
答案 0 :(得分：2)
在location / {
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-NginX-Proxy true;
proxy_redirect off;
proxy_pass http://internalhost:8080/;
}
之后移动function generateGraph(data) {
var dates = new Array();
var startDate = "";
for (var i = 0; i < data.length; i++) {
dates[i] = data[i].date;
}
var productInsight = _comm.getProductInsightArray();
var productInsight_Array = new Array();
$.each(productInsight, function(key, value) {
productInsight_Array.push(key);
});
if(dates.length > 0) {
startDate = dates[0].split("/");
}
intervals = 24 *3600 * 1000; //one day
var title = $("#DateSearch_analytics_Similar_Stores1").val();
var color = ['#000000', '#FFFFFF', '#000080', '#0000FF', '#808080'];
var containers =['container1', 'container2','container3','container4', 'container5', 'container6', 'container7', 'container8', 'container9'];
for(var j=0; j<containers.length; j++)
{
var chart = new Highcharts.Chart({
chart: {
zoomType: 'x',
renderTo: containers[j],
type: 'line',
},
title: {
text: title
},
subtitle: {
text: document.ontouchstart === undefined ?
'Click and drag in the plot area to zoom in' :
'Pinch the chart to zoom in'
},
xAxis: {
type: 'datetime',
tickInterval: intervals,
},
series: []
});
for(var i=0; i < productInsight_Array.length; i++) {
var fillData = new Array();
var counter = 0;
var productValue = document.getElementById('product-nm').value;
$.each(dates, function() {
fillData[counter] = _comm.randomNumberFromRange(_randomNumberStartRange, _randomNumberEndRange);
counter++;
});
chart.addSeries({
name: productInsight_Array[i],
type: 'line',
color: color[i],
pointStart: Date.UTC(startDate[2], startDate[0] - 1, startDate[1]),
pointInterval: intervals,
data: fillData,
});
}
$("text:contains('Highcharts.com')").css("display", "none");
}
}
接受并忽略输入流中留下的悬空换行符，并致电keyboard.nextLine();。
当我运行它时，它会存储用户的答案 - 尝试打印存储在n2 = keyboard.nextInt();字段中的内容，然后您就会看到问题。
答案 1 :(得分：0)
更改keyboard.nextLine();的位置。
keyboard.nextLine();
answer = keyboard.nextLine();
在你的代码中，答案是获得下一行（即enter），当你获取n2的值并按回车键时，它会进入画面。
您可以通过执行以下代码
来测试您的代码System.out.println("Enter yes to continue or any other key to end");
answer = keyboard.nextLine();
System.out.println("Answer : " + answer);
System.out.println(keyboard.nextLine());
答案 2 :(得分：0)
Scanner keyboard = new Scanner(System.in);
int n1, n2, sum;
String answer = "Yes";
while (answer.equals("Yes"))
{
System.out.println("Enter number 1: ");
n1 = keyboard.nextInt();
System.out.println("Enter number 2: ");
n2 = keyboard.nextInt();
sum = n1 + n2;
System.out.println("Number 1\t" + "Number 2\t" + "Sum");
System.out.println("__________________________________");
System.out.println(n1 + "\t\t" + n2 + "\t\t" + sum);
System.out.println("Enter yes to continue or any other key to end");
answer = keyboard.nextLine();
keyboard.nextLine();
}