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filebot/source/net/sourceforge/tuned/ExceptionUtilities.java
2009-05-13 18:20:26 +00:00

70 lines
1.2 KiB
Java

package net.sourceforge.tuned;
public final class ExceptionUtilities {
public static Throwable getRootCause(Throwable t) {
while (t.getCause() != null) {
t = t.getCause();
}
return t;
}
public static <T extends Throwable> T findCause(Throwable t, Class<T> type) {
while (t != null) {
if (type.isInstance(t))
return type.cast(t);
t = t.getCause();
}
return null;
}
public static String getRootCauseMessage(Throwable t) {
return getMessage(getRootCause(t));
}
public static String getMessage(Throwable t) {
String message = t.getMessage();
if (message == null || message.isEmpty()) {
message = t.toString();
}
return message;
}
public static <T extends Throwable> T wrap(Throwable t, Class<T> type) {
if (type.isInstance(t)) {
return type.cast(t);
}
try {
return type.getConstructor(Throwable.class).newInstance(t);
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
}
public static RuntimeException asRuntimeException(Throwable t) {
return wrap(t, RuntimeException.class);
}
/**
* Dummy constructor to prevent instantiation.
*/
private ExceptionUtilities() {
throw new UnsupportedOperationException();
}
}