小编jol*_*ger的帖子

void menu() {
    print();
    Scanner input = new Scanner( System.in );
    while(true) {
        String s = input.next();
        switch (s) {
        case "m": print(); continue;
        case "s": stat(); break;
        case "[A-Z]{1}[a-z]{2}\\d{1,}": filminfo( s ); break;
        case "Jur1": filminfo(s); break; //For debugging - this worked fine
        case "q": ; return;
        }
    }
}

似乎我的正则表达式已关闭或我在案例陈述中没有正确使用它.我想要的是一个字符串:开头只有一个大写字母,后面跟着两个小写字母,后跟至少一个数字.

我已经检查了正则表达式API并尝试了三种变体(贪婪,不情愿和占有量词),却不知道它们的正确用法.还检查了String的方法,但没有找到与我的需求相关的方法.

我正在尝试重用输入法Scanner(System.in)和BufferedReader(FileReader).当用户键入"readfile"作为命令时,程序会将文件中的第一个人(即文件中的第一行)添加到列表中,但是BufferedReader卡在同一行上,因此卡在无限循环中.键盘输入
的Scanner方法就像魅力一样.

    class Menu {
        public static final int ARRAYINDEXFOREMAIL = 3;
        private static final String NEWPERSON = "newperson";
        private static final String FROMFILE = "readfile";
        public static final String READFILE = "saved.txt";
        private Scanner keyboardInput = new Scanner( System.in );
        private String name;
        private String tlf;
        private String[] email;
        private String [] stringTmp;
        private String in;
        private boolean readFromFile = false;

        Menu( boolean fileRead ) {
            if( fileRead ) {
                readFromFile …

我已经看到可以使用多个三元条件,但是如果单个条件为真,则没有找到分配两个变量的方法.这是我试图写的方法:

    int[] chkNext(int mnd, int y) {  
        int[] date = new int[2];  
        mnd = 12 ? mnd = 1, y++ : mnd++; // returns the following: "error: : expected"
        date[0] = mnd, date[1] = y;  
        return date;  
    }  

我需要在Java分配中使用方法名称setNumberMeAndTheRest().
是否可以定义更短更恰当的名称,并允许通过所需名称调用该方法？

我有一个带有几个StreamFields 的抽象Wagtail模型.其中两个StreamField位于管理视图中的单独选项卡中,这些选项卡将添加到edit_handler.

class AbstractHomePage(Page):
    body = StreamField(
        HomePageStreamBlock(),
        default=''
    )
    headingpanel = StreamField(
        HeadingPanelStreamBlock(),
        default=''
    )
    sidepanel = StreamField(
        SidePanelStreamBlock(),
        default=''
    )

    class Meta:
        abstract = True

    search_fields = Page.search_fields + [index.SearchField('body')]

    content_panels = Page.content_panels + [
        StreamFieldPanel('body'),
    ]

    pagesection_panels = [
        StreamFieldPanel('headingpanel'),
        StreamFieldPanel('sidepanel'),
    ]

    edit_handler = TabbedInterface([
        ObjectList(content_panels),
        ObjectList(pagesection_panels, heading='Page sections'),
        ObjectList(Page.promote_panels),
        ObjectList(Page.settings_panels, classname='settings'),
    ])

我想扩展此模型并添加一个字段:

class Foo(AbstractHomePage):
    extra = models.TextField()

    Meta:
        verbose_name='Foo'

    content_panels = [
        AbstractHomePage.content_panels[0],     # title
        FieldPanel('extra'),
        AbstractHomePage.content_panels[-1]     # streamfield …

我得到:'
需要意外类型:变量
找到:值'在标记的行(*)

for (int i = 0; i < boardSize; i++) {
    for (int j = 0; j < boardSize; j++) {
        rows[i].getSquare(j) = matrix[i][j]; // * points to the ( in (j)
        columns[j].getSquare(i) = matrix[i][j]; // * points to the ( in
        int[] b = getBox(i, j);
        int[] boxCord = getBoxCoordinates(i + 1, j + 1);
        boxes[b[0]][b[1]].getSquare(boxCord[0], boxCord[1]);
    }
}

这是我的Row类:

private Square[] row;

Row(int rowCount) {
    this.row = new Square[rowCount];
}

public Square getSquare(int index) {
    return …