java button属性设置_java的JButton怎样设置内边距 java设置button位置

最简单的方法是使用VBox：

public void start(final Stage stage) throws Exception {
final Button button0 = new Button("Start learning");
final Button button1 = new Button("Customize");
final VBox box = new VBox();
box.setFillWidth(true);
box.getChildren().setAll(button0, button1);
box.setAlignment(Pos.CENTER);
stage.setScene(new Scene(box));
stage.setWidth(200);
stage.setHeight(100);
stage.show();
}

另一种可能的方法是使用GridPane：

public void start(final Stage stage) throws Exception {
final Button button0 = new Button("Start learning");
final Button button1 = new Button("Customize");
final GridPane cPane = new GridPane();
cPane.getChildren().addAll(button0, button1);
GridPane.setConstraints(button0, 0, 0, 1, 1, HPos.CENTER, VPos.CENTER);
GridPane.setConstraints(button1, 0, 1, 1, 1, HPos.CENTER, VPos.CENTER);
final ColumnConstraints columnn0 = new ColumnConstraints();
columnn0.setPercentWidth(100);
cPane.getColumnConstraints().addAll(columnn0);
final RowConstraints row0 = new RowConstraints(1);
row0.setPercentHeight(50);
final RowConstraints row1 = new RowConstraints(1);
row1.setPercentHeight(50);
cPane.getRowConstraints().addAll(row0, row1);
stage.setScene(new Scene(cPane));
stage.setWidth(200);
stage.setHeight(100);
stage.show();
}

这里的想法是配置网格中的行和列,以使用相应的约束对象填充场景.上面定义了一列和两行.然后,您可以使用GridPane.setConstraints(…)在Grid的单元格内对齐组件.

您可能需要稍微更改代码以使顶部按钮与VPos.BOTTOM对齐,将较低的按钮与VPos.TOP对齐,具体取决于您是否希望按钮粘在一起(然后您必须为两者定义边距,当然).