请用java代码实现JavaBean
存在一个JavaBean，它包含以下几种可能的属性：
1:boolean/Boolean
2:int/Integer
3:String
4:double/Double
属性名未知，现在要给这些属性设置默认值，以下是要求的默认值：
String类型的默认值为字符串 www.csdn.com
int/Integer类型的默认值为100
boolean/Boolean类型的默认值为true
double/Double的默认值为0.01D.
只需要设置带有getXxx/isXxx/setXxx方法的属性，非JavaBean属性不设置，请用代码实现
[最优解释]
懒的写toString了。
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
public final class XBean {
private final PropertyChangeSupport pcs = new PropertyChangeSupport(this);
private String site = "www.csdn.net";
private boolean validated = true;
private int amount = 100;
private double price = 0.01;
public XBean() {
}
public final String getSite() {
return site;
}
public final void setSite(final String site) {
pcs.firePropertyChange("site", getSite(), site);
this.site = site;
}
public final boolean isValidated() {
return validated;
}
public final void setValidated(final boolean validated) {
pcs.firePropertyChange("validate", isValidated(), validated);
this.validated = validated;
}
public final int getAmount() {
return amount;
}
public final void setAmount(final int amount) {
pcs.firePropertyChange("amount", getAmount(), amount);
this.amount = amount;
}
public final double getPrice() {
return price;
}
public final void setPrice(final double price) {
pcs.firePropertyChange("price", getPrice(), price);
this.price = price;
}
public void addPropertyChangeListener(final PropertyChangeListener l) {
pcs.addPropertyChangeListener(l);
}
public void removePropertyChangeListener(final PropertyChangeListener l) {
pcs.removePropertyChangeListener(l);
}
public static void main(final String[] args) {
final XBean bean = new XBean();
bean.addPropertyChangeListener(new PropertyChangeListener() {
@Override
public void propertyChange(final PropertyChangeEvent evt) {
System.out.println(evt);
}
});
bean.setAmount(200);
bean.setValidated(false);
bean.setSite("bbs.csdn.net");
bean.setPrice(10.11);
}
}
