Get and set the value of a property in a bean using Expression and Statement : JavaBeans « Development « Java Tutorial

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Java Tutorial » Development » JavaBeans 
6. 56. 20. Get and set the value of a property in a bean using Expression and Statement
import java.beans.Expression;
import java.beans.Statement;

public class Main {
  public static void main(String[] argvthrows Exception {
    Object o = new MyBean();
    // Get the value of prop1
    Expression expr = new Expression(o, "getProp1"new Object[0]);
    expr.execute();
    String s = (Stringexpr.getValue();

    // Set the value of prop1
    Statement stmt = new Statement(o, "setProp1"new Object[] { "new string" });
    stmt.execute();
  }
}

class MyBean {
  String prop1;

  public String getProp1() {
    return prop1;
  }

  public void setProp1(String s) {
    prop1 = s;
  }

  int prop2;

  public int getProp2() {
    return prop2;
  }

  public void setProp2(int i) {
    prop2 = i;
  }

  byte[] prop3;

  public byte[] getProp3() {
    return prop3;
  }

  public void setProp3(byte[] bytes) {
    prop3 = bytes;
  }
}
6. 56. JavaBeans
6. 56. 1. Listening for Changes to the Selected File in a JFileChooser Dialog
6. 56. 2. Get a list of selected files
6. 56. 3. Listening for Changes to the Current Directory in a JFileChooser Dialog
6. 56. 4. Displaying the Current Directory in the Title of a JFileChooser Dialog
6. 56. 5. Setting an Accessory Component in a JFileChooser Dialog
6. 56. 6. Convert a bean to XML persistence
6. 56. 7. Listen for bean's property change event
6. 56. 8. List property names of a Bean
6. 56. 9. Prevent bean's property being serialized to XML
6. 56. 10. Create an instance a Bean
6. 56. 11. Convert an XML persistence to bean
6. 56. 12. Determine bean's property type
6. 56. 13. Listen for a constrained property change
6. 56. 14. Bean has a single property called property.
6. 56. 15. Implementing a Bound Property
6. 56. 16. Implementing a Constrained Property: fires a PropertyChangeEvent whenever its value is about to be changed.
6. 56. 17. Instantiating a Bean
6. 56. 18. Listing the Property Names of a Bean
6. 56. 19. Getting and Setting a Property of a Bean
6. 56. 20. Get and set the value of a property in a bean using Expression and Statement
6. 56. 21. Get and set an Object type property
6. 56. 22. gets and sets a primitive type property
6. 56. 23. gets and sets an array type property
6. 56. 24. Serializing a Bean to XML: XMLEncoder only persists the value of public properties.
6. 56. 25. Deserializing a Bean from XML
6. 56. 26. Preventing a Bean Property from Being Serialized to XML
6. 56. 27. Serializing an Immutable Bean Property to XML
6. 56. 28. Listening for a Property Change Event: A property change event is fired when a bound property is changed.
6. 56. 29. Listening for a Vetoable Property Change Event
6. 56. 30. Read bean's property value
6. 56. 31. extends SimpleBeanInfo
6. 56. 32. Get and set properties on a bean
6. 56. 33. Process bean properties getter by applying the JavaBean naming conventions.
6. 56. 34. Is JavaBean Compliant Setter
6. 56. 35. Constructs a method name from element's bean name for a given prefix
6. 56. 36. Returns attribute's setter method. If the method not found then NoSuchMethodException will be thrown.
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