8
私は第二引数に異なる列挙型を渡すことができますどのように次のような方法パスジェネリック型の列挙型を(Java)の
@SuppressWarnings("unchecked")
protected <E extends Enum<E>> void populateComboWithEnumValues(Combo combo, E enumData, String defaultSelectionValue) {
// populate commbo
for (Enum<E> enumVal: enumData.getClass().getEnumConstants()) {
combo.add(enumVal.toString());
}
// select default selection
for (Enum<E> enumVal: enumData.getClass().getEnumConstants()) {
if(enumVal.toString().equals(defaultSelectionValue)) {
try {
combo.select((Integer) enumVal.getClass().getMethod("getSelectionIndex").invoke(enumVal));
} catch (IllegalArgumentException e) {
LOGGER.debug("an IllegalArgumentException exception occured");
} catch (SecurityException e) {
LOGGER.debug("an SecurityException exception occured");
} catch (IllegalAccessException e) {
LOGGER.debug("an IllegalAccessException exception occured");
} catch (InvocationTargetException e) {
LOGGER.debug("an InvocationTargetException exception occured");
} catch (NoSuchMethodException e) {
LOGGER.debug("an NoSuchMethodException exception occured");
}
}
}
を書かれていますか?私は列挙型のインスタンスを作成することはできませんが、列挙型を初期化するということは、次のように初期化された列挙型ではなく単一の値を渡すことを意味します...他の列挙型もコンボ指定と同じメソッドに渡されます
public enum ServerEnvironmentName {
/**
* The CFD environment name.
* Selection Index
*/
CFD("CFD", 0),
/**
* The PIT environment name.
* Selection Index
*/
PIT("PIT", 1),
/**
* The SIT environment name.
* Selection Index
*/
SIT("SIT", 2),
/**
* The DEV environment name.
* Selection Index
*/
DEV("DEV", 3);
/** The input string to identify the environment. */
private String envURL;
/** The index value for view selection.*/
private int selectionIndex;
/**
* Enum constructor to initialise default values.
*
* @param selectionIndex index value for view selection
* @param envURL input parameter for environment
*/
ServerEnvironmentName(String envURL, int selectionIndex) {
this.envURL = envURL;
this.selectionIndex = selectionIndex;
}
/**
* Getter for the envURL.
*
* @return the environment string
*/
public String getEnvironmentUrl() {
return envURL;
}
/**
* This method returns the index of the enum value.
*
* @return the selection index
*/
public int getSelectionIndex() {
return selectionIndex;
}
}