格式化从文本文件读入的数据

Question

我有一个对象Location，它接受参数String name，int xCoordinate，int yCoordinate。我有以下文本文件，从中读取值并将它们转换为Location对象。

Location: Italy 65 120
Location: Spain 20 100
Location: France 130 60
Location: England 160 140
Location: Scotland 65 100
Location: Hungary 110 120
Location: Ireland 20
120

Location: Russia 40 10
Location: America 90 15
Location: Greece 

39 23
Location: India 49 5
Location: Japan 11 20
Location: Africa 110
100

Location: Norway 22 30
Location: Sweden 34 35
Location: Iceland
94 22
Location: Denmark 36 20

请注意，位置前面总是以＆＃34;位置：＆＃34;并且名称和坐标可以用任意数量的行分隔。

我已经提出了以下代码，但它似乎不起作用：

FileInputStream fileIn = new FileInputStream("src\\graph.txt");
Scanner scan = new Scanner(fileIn);
WorldMap map1= new WorldMap();
while(scan.hasNext()) {
    if(scan.next().equals("Location:")) {
        map1.addLocation(scan.next(), scan.nextInt(), scan.nextInt());
    }
}

Answer 1

用以下代码替换您的代码：

while(scan.hasNextLine()) {
    if(scan.nextLine().startsWith("Location:")) {
        //doWhatver you want to Do here 
    }
}

Answer 2

最好是阅读所有行并使用一组正则表达式来确定如何处理该行。