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A unique, practical approach to working with collection classes in Java 2
Software developers new to Java will find the practical, software-engineering based approach taken by this book extremely refreshing. With an emphasis more on software design and less on theory, Java Collections explores in detail Java 2 collection classes, helping programmers choose the best collection classes for each application they work on. Watt and Brown explore abstract data types (ADTs) that turn up again and again in software design, using them to provide context for the data structures required for their implementation and the algorithms associated with the data structures. Numerous worked examples, several large case studies, and end-of-chapter exercises are also provided.
In Section 1.1 we encountered a variety of algorithms. In this section we briefly discuss some fundamental issues concerned with problems, algorithms, and notation.
Concerning problems, we can state the following principles:
EXAMPLE 2.1 The halting problem
The problem is to predict whether a given computer program, with given input data, will eventually halt.
This is a very practical problem for us programmers: we all occasionally write a program that gets into a never-ending loop. One of the most famous results in computer science is that this problem cannot be solved by any algorithm. It turns out that any 'algorithm' that purports to solve this problem will itself get into a never-ending loop, for at (cast some programs that might be given to it. As we shall see later in this section, we insist that every algorithm must eventually terminate.
If we can never find an algorithm to predict whether a given program halts with given input data, we clearly can never find an algorithm to prove whether a given program behaves correctly fen- all possible input data.
It may still be possible for a human to prove that a particular program is correct. Indeed. this has been done for some important small programs and subprograms. But we can never automate such proofs of correctness.
In fact, many problems in mathematics and computer science are unsolvable by algorithms. In a way, this is rather reassuring: we can be sure that mathematicians and computer scientists will never be made redundant by machines!
From now on, we shall consider only problems that are solvable by algorithms.
Concerning al-orithirns themselves, we can state the following principles:
An algorithm is an automatic procedure for solving a stated problem, a procedure that could (at least in principle) be performed by a machine.
The principle that the algorithm must be expressed in steps that can be performed by the processor should now be clear. If the processor has to work out for itself what steps to follow, then what we have is not an algorithm. The principle that every algorithm must eventually terminate should also be clear. If it never terminates, it never produces an answer, therefore it is not an algorithm! So an algorithms must avoid getting into a never-ending loop...
Part I: Ready, Set, Go with VMware Infrastructure 3 9
Chapter 1: Exploring VMware Infrastructure 3 as Your Virtual Solution 11
Chapter 2: Getting the Scoop on Capacity Planning 23
Chapter 3: Knowing Your Storage Options 39
Part II: Setting Up ESX Hosts 55
Chapter 4: ESX: The Brawn Behind the Brains 57
Chapter 5: ESX Installation — Now the Fun Begins 67
Part III: Connecting the Physical to Your Virtual Environment 81
Chapter 6: Embracing the Look and Feel of VMware Infrastructure Client 83
Chapter 7: Virtual Networking 95
Chapter 8: Connecting to Storage 119
Part IV: Fault Tolerance and Data Centers 137
Chapter 9: Getting VMware Virtual Center Running 139
Chapter 10: Making Virtual Machines 161
Chapter 11: Managing Virtual Machines 175
Chapter 12: Keeping Things Running with Virtual Clusters 193
Part V: Playing Virtual Adminstrator 209
Chapter 13: Securing Your System 211
Chapter 14: Swimming in Resource Pools 229
Chapter 15: Monitoring Your System 243
Chapter 16: Preparing for Disaster 259
Chapter 17: Troubleshooting 271
Part VI: The Part of Tens 281
Chapter 18: Ten Places to Discover More 283
Chapter 19: Ten Other VMware Products 295
Chapter 20: Ten Cool Virtual Appliances 307
Posted October 21, 2001
It's all written back to front and it doesnt explain things clearly. If you're SUPER intellegent then this book might be ok, but if you're like me and just want to learn without headach, then find another book. This one is a joke...Was this review helpful? Yes NoThank you for your feedback. Report this reviewThank you, this review has been flagged.