来源： javax.swing.JButton中[，571,647,80x80，alignmentX = 0.0，alignmentY = 0.5，边界= com.apple.laf.AquaButtonBorder $切换@ 1380cf2a，旗帜= 288，MAXIMUMSIZE = java.awt.Dimension中[宽度= 80，高度= 80]，=的minimumSize java.awt.Dimension中[宽度= 80，高度= 80]，使用preferredSize = java.awt.Dimension中[宽度= 80，高度= 80]，的DefaultIcon =文件：/用户/ andreaks /桌面/ PreEntregaiDomino /build/classes/imagenes/A23.png,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=0,left=2,bottom=0,right=2],paintBorder=true,paintFocus=真，pressedIcon =，rolloverEnabled =假，rolloverIcon =，rolloverSelectedIcon =，selectedIcon =，文本=，defaultCapable =真]
NAME：null
使用的代码是
private void JBsetseleccionadActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
Object boton = evt.getSource();
JButton este= (JButton) boton;
seleccionado = este;
System.out.println("SOURCE " + boton.toString());
System.out.println("NAME " + este.getName());
}
任何想法？
答案 0 :(得分：1)
尝试类似：
String text = ((JButton) e.getSource()).getText();
private JButton button;
button = new JButton("Button");
button.addActionListener(new BListener());
private class BListener implements ActionListener{
public void actionPerformed(ActionEvent e){
if(e.getSource() == button){
//code for when the JButton button is pushed
}
}
}
答案 1 :(得分：0)
getComponentVariableName（组分）
如果您正在使用NetBeans或类似的IDE，默认情况下会创建私有变量（字段）以保存对所有组件的引用，那么您可以执行以下操作...
private void JBsetseleccionadActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
Object boton = evt.getSource();
JButton este= (JButton) boton;
seleccionado = null;
System.out.println("SOURCE " + boton.toString());
System.out.println("NAME " + Awt2.getComponentVariableName(boton));
seleccionado = este;
}
使上述代码成为可能的代码如下......
import java.awt.Component;
import java.lang.reflect.Field;
/**
* additional utilities for working with AWT/Swing.
* this is a single method for demo purposes.
* recommended to be combined into a single class
* module with other similar methods,
* e.g. MySwingUtilities
*
* @author http://javajon.blogspot.com/2013/07/java-awtswing-getcomponentvariablenamec.html
*/
public class Awt2 {
/**
* substitute for component.getName() when used in NetBeans or other IDE
* that creates class fields to hold the components. uses reflection to
* search through class fields for a match.
* @param component the component to look for
* @return hopefully the variable name used to hold this component
*/
static public String getComponentVariableName(Object object) {
if (object instanceof Component) {
final Component component = (Component) object;
final StringBuilder sb = new StringBuilder();
// find the form where the variable name would be likely to exist
final Component parentForm = getParentForm(component);
// loop through all of the class fields on that form
for (Field field : parentForm.getClass().getDeclaredFields()) {
try {
// let us look at private fields, please
field.setAccessible(true);
// get a potential match
final Object potentialMatch = field.get(parentForm);
// compare it
if (potentialMatch == component) {
// return the name of the variable used
// to hold this component
if (sb.length() > 0) sb.append(",");
sb.append(field.getName());
}
} catch (SecurityException | IllegalArgumentException
| IllegalAccessException ex) {
// ignore exceptions
}
}
if (sb.length() > 0) {
return sb.toString();
}
}
// if we get here, we're probably trying to find the form
// itself, in which case it may be more useful to print
// the class name (MyJFrame) than the AWT-assigned name
// of the form (frame0)
final String className = object.getClass().getName();
final String[] split = className.split("\\.");
final int lastIndex = split.length - 1;
return (lastIndex >= 0) ? split[lastIndex] : className;
}
/**
* traverses up the component tree to find the top, which i assume is the
* dialog or frame upon which this component lives.
* @param sourceComponent
* @return top level parent component
*/
static public Component getParentForm(Component sourceComponent) {
while (sourceComponent.getParent() != null) {
sourceComponent = sourceComponent.getParent();
}
return sourceComponent;
}
}
它使用反射来查看表单上的所有私有变量，并尝试将它们与您要识别的组件相匹配。如果找到匹配项，则返回用于引用该组件的java变量的名称。如果它找到两个或多个匹配项，则返回逗号分隔列表，这就是我将seleccionado = null;添加到第一个示例中的原因。如果我们把代码放回原来......
private void JBsetseleccionadActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
Object boton = evt.getSource();
JButton este= (JButton) boton;
seleccionado = este;
System.out.println("SOURCE " + boton.toString());
System.out.println("NAME " + Awt2.getComponentVariableName(boton));
}
结果可能如下所示......
SOURCE javax.swing.JButton[,6,6,126x28,alignmentX=0.0,alignmentY=0.5,border=javax.swing.plaf.synth.SynthBorder@7c0d41,flags=288,maximumSize=,minimumSize=,preferredSize=,defaultIcon=,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=0,left=0,bottom=0,right=0],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=true,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=What's my name?,defaultCapable=true] NAME seleccionado,jButton1
希望这有帮助！
答案 2 :(得分：0)
虽然这是一个老问题，但如果有帮助，我仍然想回答。
添加按钮时，请确保调用setName（）函数，如下所示：
private void JBsetseleccionadActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
Object boton = evt.getSource();
JButton este = (JButton) boton;
este.setName("button_name"); // set the name first
seleccionado = este;
System.out.println("SOURCE " + boton.toString());
System.out.println("NAME " + este.getName());
}
这应解决您的问题，getName（）应该能够提供名称。这有点奇怪，但仍然是完成它的最简单方法。