| /* |
| * @test /nodynamiccopyright/ |
| * @bug 4209652 4363318 |
| * @summary Basic test for chained exceptions & Exception.getStackTrace(). |
| * @author Josh Bloch |
| */ |
| |
| public class ChainedExceptions { |
| public static void main(String args[]) { |
| try { |
| a(); |
| } catch(HighLevelException e) { |
| StackTraceElement[] highTrace = e.getStackTrace(); |
| int depthTrim = highTrace.length - 2; |
| |
| check(e, highTrace[0], "a", 48); |
| check(e, highTrace[1], "main", 11); |
| |
| Throwable mid = e.getCause(); |
| StackTraceElement[] midTrace = mid.getStackTrace(); |
| if (midTrace.length - depthTrim != 4) |
| throw new RuntimeException("Mid depth"); |
| check(mid, midTrace[0], "c", 58); |
| check(mid, midTrace[1], "b", 52); |
| check(mid, midTrace[2], "a", 46); |
| check(mid, midTrace[3], "main", 11); |
| |
| Throwable low = mid.getCause(); |
| StackTraceElement[] lowTrace = low.getStackTrace(); |
| if (lowTrace.length - depthTrim != 6) |
| throw new RuntimeException("Low depth"); |
| check(low, lowTrace[0], "e", 65); |
| check(low, lowTrace[1], "d", 62); |
| check(low, lowTrace[2], "c", 56); |
| check(low, lowTrace[3], "b", 52); |
| check(low, lowTrace[4], "a", 46); |
| check(low, lowTrace[5], "main", 11); |
| |
| if (low.getCause() != null) |
| throw new RuntimeException("Low cause != null"); |
| } |
| } |
| |
| static void a() throws HighLevelException { |
| try { |
| b(); |
| } catch(MidLevelException e) { |
| throw new HighLevelException(e); |
| } |
| } |
| static void b() throws MidLevelException { |
| c(); |
| } |
| static void c() throws MidLevelException { |
| try { |
| d(); |
| } catch(LowLevelException e) { |
| throw new MidLevelException(e); |
| } |
| } |
| static void d() throws LowLevelException { |
| e(); |
| } |
| static void e() throws LowLevelException { |
| throw new LowLevelException(); |
| } |
| |
| private static final String OUR_CLASS = ChainedExceptions.class.getName(); |
| private static final String OUR_FILE_NAME = "ChainedExceptions.java"; |
| |
| private static void check(Throwable t, StackTraceElement e, String methodName, int n) { |
| if (!e.getClassName().equals(OUR_CLASS)) |
| throw new RuntimeException("Class: " + e, t); |
| if (!e.getMethodName().equals(methodName)) |
| throw new RuntimeException("Method name: " + e, t); |
| if (!e.getFileName().equals(OUR_FILE_NAME)) |
| throw new RuntimeException("File name: " + e, t); |
| if (e.getLineNumber() != n) |
| throw new RuntimeException("Line number: " + e, t); |
| } |
| } |
| |
| class HighLevelException extends Exception { |
| HighLevelException(Throwable cause) { super(cause); } |
| } |
| |
| class MidLevelException extends Exception { |
| MidLevelException(Throwable cause) { super(cause); } |
| } |
| |
| class LowLevelException extends Exception { |
| } |