| Method Signatures and Parameters | |
Jt.numberInput(String label) | label (String) A short label explaining to the user what this numeric input is for. Markdown is supported, see |
Jt.numberInput(String label, Class<T> valueClass) | label (String) A short label explaining to the user what this numeric input is for. Markdown is supported, see valueClass (Class<T>) The number type class (Integer, Double, Float, etc.) |
| Chainable builder methods | |
value(T value) | The value of this widget when it first renders.
If |
minValue(T minValue) | The minimum permitted value. For |
maxValue(T maxValue) | The maximum permitted value. For |
step(T step) | The stepping interval. Defaults to 1 for |
format(String format) | A printf-style format string controlling how numbers are displayed in the interface. The output must be purely numeric. This does not impact the return value of the widget. For more information about the formatting specification, see sprintf.js.
For example, |
help(String help) | A tooltip that gets displayed next to the widget label. If |
placeholder(String placeholder) | An optional text displayed when the number input is empty, providing guidance to the user. If None, no placeholder is displayed. |
disabled(boolean disabled) | Disables the number input if set to true. When disabled, users cannot interact with the widget. |
labelVisibility(JtComponent.LabelVisibility labelVisibility) | The visibility of the label. The default is |
icon(String icon) | An icon to display with the error message. The following values are valid:
null (default), no icon is displayed.
|
width(String width) | The width of the element. This can be one of the following:
|
width(int widthPixels) | The width of the number input in pixels. The element will have a fixed width. If the specified width is greater than the width of the parent container, the width of the element matches the width of the parent container. |
onChange(function.Consumer<T> onChange) | An optional callback invoked when the number input's value changes. The value passed to the callback is the previous value of the component. |
key(String key) | A string to use as the unique key for the widget. If this is omitted, a key will be generated for the widget based on its content. No two widgets may have the same key. |
No description | |
use() | Put the widget in the app, in the |
use(JtContainer container) | Put the widget in the app, in the provided container. |
| Returns after .use() | |
(T) | The current T value of the component. |
Examples
Simple number input
import tech.catheu.jeamlit.core.Jt;
public class NumberInputApp {
public static void main(String[] args) {
Number quantity = Jt.numberInput("Quantity").minValue(1).maxValue(100).use();
if (quantity != null) {
Jt.text("You selected: " + quantity).use();
}
}
}
Integer input with specific type
import tech.catheu.jeamlit.core.Jt;
public class TypedNumberInputApp {
public static void main(String[] args) {
Integer age = Jt.numberInput("Age", Integer.class)
.minValue(0)
.maxValue(150)
.use();
if (age != null) {
String category = age < 18 ? "Minor" : age < 65 ? "Adult" : "Senior";
Jt.text("Category: " + category).use();
}
}
}
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