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What's the best way to check if a String represents an integer in Java?
... (c < '0' || c > '9')... are the <= and >= operators faster in Java?
– Anonymous
Oct 26 '08 at 1:43
3
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How can I use MS Visual Studio for Android Development?
...t;install_path>\android-ndk
ANT_HOME = <install_path>\apache-ant
JAVA_HOME = <install_path>\jdk
_JAVA_OPTIONS = -Xms256m -Xmx512m
Download examples from here.
It works like a charm... and best so far to use.
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Java JDBC - How to connect to Oracle using Service Name instead of SID
I have a Java application that uses JDBC (via JPA) that was connecting to a development database using hostname, port and Oracle SID, like this:
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Why do we use Base64?
...ndvcmxkIQ==
Which when encoded using ASCII looks like this:
83 71 86 115 98 71 56 115 67 110 100 118 99 109 120 107 73 61 61
All the bytes here are known safe bytes, so there is very little chance that any system will corrupt this message. I can send this instead of my original message and let t...
How to properly override clone method?
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Do you absolutely have to use clone? Most people agree that Java's clone is broken.
Josh Bloch on Design - Copy Constructor versus Cloning
If you've read the item about cloning in my book, especially if you read between the lines, you will know that I think clone is deeply broken...
@RequestParam in Spring MVC handling optional parameters
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As part of Spring 4.1.1 onwards you now have full support of Java 8 Optional (original ticket) therefore in your example both requests will go via your single mapping endpoint as long as you replace required=false with Optional for your 3 params logout, name, password:
@RequestMapping...
Are there best practices for (Java) package organization? [closed]
... I saw a question answered here regarding the fine-grained organization of java packages. For example, my.project.util , my.project.factory , my.project.service , etc.
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Command line progress bar in Java
I have a Java program running in command line mode.
I would like to display a progress bar, showing the percentage of job done.
The same kind of progress bar you would see using wget under unix.
Is this possible?
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Why does writeObject throw java.io.NotSerializableException and how do I fix it?
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java.io.NotSerializableException can occur when you serialize an inner class instance because:
serializing such an inner class instance will result in serialization
of its associated outer class instance as well
Serializatio...
How to get UTF-8 working in Java webapps?
I need to get UTF-8 working in my Java webapp (servlets + JSP, no framework used) to support äöå etc. for regular Finnish text and Cyrillic alphabets like ЦжФ for special cases.
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