小编Mil*_*lan的帖子

我是JAVA的新手,刚刚开始学习IS-A和HAS-A关系,但是得不到多少.我想想象一下这两者是如何不同的以及我们何时应该使用IS-A和HAS-A？

我已经在tableView中的删除网格线中尝试了以下代码,但这只允许我更改垂直线颜色而不是水平线颜色.

所以,我正在尝试更改下图中可以看到的白色边框线颜色,我该如何更改此颜色？我正在使用JavaFX和CSS.

这是我的CSS:

.table-view{
    -fx-background-color: transparent;
}

.table-view:focused{
    -fx-background-color: transparent;
}

.table-view .column-header-background{
    -fx-background-color: #262626;
}

.table-view .column-header-background .label{
    -fx-background-color: transparent;
    -fx-text-fill: #0ed9e0;
}

.table-view .column-header {
    -fx-background-color: transparent;
}

.table-view .table-cell{
    -fx-text-fill: #0ed9e0;
    -fx-alignment: center;
}

.table-row-cell{
    -fx-background-color: -fx-table-cell-border-color, #2b2a2a;
    -fx-background-insets: 0, 0 0 1 0;
    -fx-padding: 0.0em; /* 0 */
}

.table-row-cell:odd{
    -fx-background-color: -fx-table-cell-border-color, #262626;
    -fx-background-insets: 0, 0 0 1 0;
    -fx-padding: 0.0em; /* 0 */
}

.table-row-cell:selected {
    -fx-background-color: #005797;
    -fx-background-insets: 0;
    -fx-background-radius: 1;
}

所以,我正在尝试更新我在Java 6 Release上创建的旧JavaFX应用程序.我得到了一个提示,我可以转换当前的代码并使用lambda表达式,有人可以帮助我在这里转换这段代码或以某种方式指导我？

// define a simple boolean cell value for the action column so that the column will only be shown for non-empty rows.
    addColumn.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<UserDetails, Boolean>, ObservableValue<Boolean>>() {
        @Override public ObservableValue<Boolean> call(TableColumn.CellDataFeatures<UserDetails, Boolean> features) {
            return new SimpleBooleanProperty(features.getValue() != null);
        }
    });

    // create a cell value factory with an add button for each row in the table.
    addColumn.setCellFactory(new Callback<TableColumn<UserDetails, Boolean>, TableCell<UserDetails, Boolean>>() {
        @Override public TableCell<UserDetails, Boolean> call(TableColumn<UserDetails, Boolean> personBooleanTableColumn) {
            return new AddPersonCell(window, tableUser);
        }
    });

我试图首先在线程内执行代码,并等待for循环完成后再执行for循环后的代码.

for (int i = 254; i > 1; i--)
{

    //some code here...

    WaitCallback func = delegate (object state)
    {
        //do something here.... - i want this to finish with the loop first
    };

    ThreadPool.QueueUserWorkItem(func);

}

// this code is executed once the for loop has finished
// however i want it to be done 
// after the thread has finished executing its code and the for loop.