Examples of java.util.Stack.peek()

java.util.Stack.peek()
Looks at the object at the top of this stack without removing it from the stack. @return the object at the top of this stack (the last itemof the Vector object). @exception EmptyStackException if this stack is empty.

    synchronized(_context) {
      Stack stack = (Stack)_context.get(Thread.currentThread());
      if (stack == null || stack.isEmpty()) {
        throw new RuntimeException("Context is missing for thread: " + Thread.currentThread());
      }
      return (Context)stack.peek();
    }
  }
  
  
  public static final void dumpStacks(PrintStream out)

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    synchronized(_context) {
      Stack stack = (Stack)_context.get(Thread.currentThread());
      if (stack == null || stack.isEmpty()) {
        return null;
      } else {
        return (Context)stack.peek();
      }
    }
  }

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      if (stack == null || stack.isEmpty()) {
        Context context = new Context(zone);
        putInstance(thread, context);
        return context;
      }
      return (Context)stack.peek();
    }
  }

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    synchronized(_context) {
      Stack stack = (Stack)_context.get(thread);
      if (stack == null || stack.isEmpty()) {
        throw new RuntimeException("Context is missing for thread: " + thread);
      }
      return (Context)stack.peek();
    }
  } 
  
  
  public static final void putInstance(Thread thread, Context context)

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    }


    public Object peek () {
      Object obj = null;
      Stack stack = (Stack)get();
      if (!stack.empty()) obj = stack.peek();
      return obj;
    }
    
    public void push (Object obj) {
      Stack stack = (Stack)get();

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      return obj;
    }
    
    public void push (Object obj) {
      Stack stack = (Stack)get();
      if (!stack.empty() && obj == stack.peek()) throw new RuntimeException(obj.toString());
      stack.push(obj);
    }
    
    public Object pop () {
      Stack stack = (Stack)get();

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                // if we pushed an error handler, pop it from the fault stack
                // before we exit normally without an exception
                if (errorHandlerMediator != null) {
                    Stack faultStack = synCtx.getFaultStack();
                    if (faultStack != null && !faultStack.isEmpty()) {
                        Object o = faultStack.peek();


                        if (o instanceof MediatorFaultHandler &&
                                errorHandlerMediator.equals(
                                        ((MediatorFaultHandler) o).getFaultMediator())) {
                            faultStack.pop();

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  // Get the stack that contains URIs for the specified prefix
  if ((stack = (Stack)_namespaces.get(prefix)) == null) {
      _namespaces.put(prefix, stack = new Stack());
  }


  if (!stack.empty() && uri.equals(stack.peek())) {
      return false;
  }


  stack.push(uri);
  _prefixStack.push(prefix);

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    /**
     * Use a namespace prefix to lookup a namespace URI
     */
    protected String lookupNamespace(String prefix) {
        final Stack stack = (Stack)_namespaces.get(prefix);
        return stack != null && !stack.isEmpty() ? (String)stack.peek() : null;
    }


    /**
     * Returns the local name of a qualified name. If the name has 
     * no prefix, then it works as the identity (SAX2).

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   * Returns the namespace URI that a prefix currently maps to
   */
  private String getNamespaceURI(String prefix) {
      // Get the stack associated with this namespace prefix
      final Stack stack = (Stack)_nsPrefixes.get(prefix);
      return (stack != null && !stack.empty()) ? (String) stack.peek()
    : EMPTYSTRING;
  }


  /**
   * Call this when an xml:space attribute is encountered to

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