Display Stack Trace Information with StackTraceElement : Exceptions « Language Basics « Java

1. Java
2. Language Basics
3. Exceptions

Display Stack Trace Information with StackTraceElement

      
public class StackTrace {
  public static boolean displayStackTraceInformation(Throwable ex) {
    ex.printStackTrace();
    StackTraceElement[] stackElements = ex.getStackTrace();
    System.out.println("The " + stackElements.length + " element"
          + ((stackElements.length == 1) ? "" : "s") + " of the stack trace:\n");
    
    for (int lcv = 0; lcv < stackElements.length; lcv++) {
      System.out.println("File name: " + stackElements[lcv].getFileName());
      System.out.println("Line number: " + stackElements[lcv].getLineNumber());

      String className = stackElements[lcv].getClassName();
      String packageName = extractPackageName(className);
      String simpleClassName = extractSimpleClassName(className);

      System.out.println("Package name: " + ("".equals(packageName) ? "[default package]" : packageName));
      System.out.println("Full class name: " + className);
      System.out.println("Simple class name: " + simpleClassName);
      System.out.println("Unmunged class name: " + unmungeSimpleClassName(simpleClassName));
      System.out.println("Direct class name: " + extractDirectClassName(simpleClassName));

      System.out.println("Method name: " + stackElements[lcv].getMethodName());
      System.out.println("Native method?: " + stackElements[lcv].isNativeMethod());

      System.out.println("toString(): " + stackElements[lcv].toString());
      System.out.println("");

    }
    return true;
  }
  public static String extractPackageName(String fullClassName) {
    if ((null == fullClassName) || ("".equals(fullClassName)))
      return "";

    int lastDot = fullClassName.lastIndexOf('.');
    if (0 >= lastDot)
      return "";
    return fullClassName.substring(0, lastDot);
  }

  public static String extractSimpleClassName(String fullClassName) {
    if ((null == fullClassName) || ("".equals(fullClassName)))
      return "";

    int lastDot = fullClassName.lastIndexOf('.');
    if (0 > lastDot)
      return fullClassName;

    return fullClassName.substring(++lastDot);
  }

  public static String extractDirectClassName(String simpleClassName) {
    if ((null == simpleClassName) || ("".equals(simpleClassName)))
      return "";

    int lastSign = simpleClassName.lastIndexOf('$');
    if (0 > lastSign)
      return simpleClassName;
    return simpleClassName.substring(++lastSign);
  }

  public static String unmungeSimpleClassName(String simpleClassName) {
    if ((null == simpleClassName) || ("".equals(simpleClassName)))
      return "";
    return simpleClassName.replace('$', '.');
  }
}

   
    
    
    
    
    
  

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