Base64 encoding and decoding of data from Java. Encode and decode methods for Strings, byte arrays, and streams.

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English

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Base64 is needed in many places other than its original use as an encoding format for transferring attachments in email. It can be used anytime binary or arbitrary data needs to be represented in common printable characters. For example to connect to a web page that requires a username and password (basic authentication) you need to Base64 encode the username and password. (See the example)

Example

URL url = new URL("http://....");
HttpURLConnection connection = (HttpURLConnection)url.openConnection();
connection.setRequestProperty(
    "Authorization", 
    "Basic " + Base64.encode(
        username + ":" + password
    )
);      
InputStream in = connection.getInputStream();

Use base64 to add a basic authentication to an HTTP request.

Be aware that Base64 encoding in not encryption. Base64 scrambles the output and it may appear to be unreadable, but it is easily deciphered by anybody with a little experience or time. Base64 encoded strings will often end in one or two equal signs, and they will have only letters, numbers, pluses, and slashes. Once somebody figures out that it is in Base64, it is just a matter of running the decode method on it. Furthermore, real encryption algorithms will change the entire output if one bit in the input changes. If you change a letter in a your message and then re-encode it with Base64, only a few characters will change. Base64 is not a substitute for encryption. Base64 used this way is obfuscation, and rather poor obfuscation at that. It may be a disservice to your users to use Base64 as obfuscation because it gives them the impression that their data is encrypted when it really isn't.

Trader Vic Methods Of A Wall Street Master By Victor _top_ Official

One of the core principles of Trader Vic's approach is understanding market psychology. He emphasizes that markets are driven by human emotions, and that successful traders and investors must be able to read and respond to these emotions. This involves developing a deep understanding of market sentiment, trends, and patterns, as well as being able to manage one's own emotions and biases.

One of the most profound psychological chapters in Methods of a Wall Street Master deals with probability.

One of the most popular tools in Sperandeo's arsenal is the 1-2-3 pattern, a method for identifying a potential trend reversal. It is a reliable setup that simplifies the identification of a trend change into three clear stages.

He entered long. The market ticked up, then hesitated. The "noise" tried to shake him out. In the past, Elias would have closed the position in fear. But he remembered Sperandeo’s golden rule: Let your winners run, but cut your losers instantly.

Explain the step-by-step with an example. Trader Vic Methods Of A Wall Street Master By Victor

In the world of finance, there are few names as synonymous with trading expertise as Victor Sperandeo, affectionately known as "Trader Vic." With a career spanning over five decades, Sperandeo has established himself as a leading authority on technical analysis and trading strategies. His book, "Trader Vic: Methods of a Wall Street Master," is a comprehensive guide to his approach to trading, offering insights into the mind of a seasoned professional. In this article, we'll delve into the key takeaways from Trader Vic's book and explore the methods that have made him a Wall Street legend.

Your analysis can be perfect, but if your mind fails you, you will lose money. Sperandeo's method devotes significant attention to trading psychology.

If you want to apply these concepts, I can break down the technical rules further.

The markets aren't always at extremes. Most of the time, you should aim for steady, low-risk gains by capturing the middle 60-80% of a major price trend. This pillar accepts that you will be wrong often. Sperandeo compares trading to baseball, where the best players only get a hit 30-40% of the time. The key is that the winning trades (the "hits") must be significantly larger than the losing trades (the "strikeouts"). One of the core principles of Trader Vic's

Sperandeo's advanced technique is to enter a trade as Point "2" is forming, placing a stop-loss just above the recent high. This allows traders to capture the new trend with a very favorable risk/reward ratio.

Here is how it works for a

If a market makes a new high (or low) but fails to sustain it, and quickly reverses, the new trend is likely to be in the opposite direction.

Absolutely. Markets are driven by human emotion—fear and greed—and those have not changed in centuries. "Trader Vic" provides a framework for discipline that is arguably more important today than ever before. One of the most profound psychological chapters in

Only after capital is safe and profits are locked in should a trader take more aggressive risks for exceptional gains. Technical Analysis: Identifying the Trend Change

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Perhaps the most famous actionable tool in the book is Sperandeo's systematic method for identifying the exact moment a trend changes direction. The removes guesswork from charting.

Never risk a large portion of your capital on a single trade.

Sperandeo argues that building wealth requires a hierarchical approach to trading goals: Preservation of Capital

Links

Author	License	Features
Stephen Ostermiller com.Ostermiller.util.Base64	Open source, GPL	Encodes and decodes strings, byte arrays, files, and streams from static methods.
Robert W. Harder Base64	Open source, public domain	Encodes and decodes strings, byte arrays, and objects from static methods. It will encode and decode streams if you instantiate a Base64.InputStream or a Base64.OutputStream.
Roedy Green Java Glossary com.mindprod.base64.base64	Open source, freeware (except military)	Encodes from byte arrays to strings, decodes from strings to byte arrays.
Tom Daley JavaWorld Tip	unknown	Annotated code and nifty graphic that shows how Base64 encoding works. Supports byte array to byte array operations.
Sinotar com.sinotar.algorithm.Base64	Open source, free only for personal use.	Encodes from byte arrays to strings, decodes from strings to byte arrays.

License

The OstermillerUtils library is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.