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Using Java 8's Optional with Stream::flatMap
The new Java 8 stream framework and friends make for some very concise java code, but I have come across a seemingly-simple situation that is tricky to do concisely.
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Converting a string to int in Groovy
... and would like to convert it to an int . Is there a groovy equivalent of Java's Integer.parseInt(String) ?
13 Answers
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Best approach to converting Boolean object to string in java
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@lazyvab In all honesty I have no idea! I don't write Java anymore but I can only presumable it was something I must have heard. I've been programming in other languages for the past few years but can't see why using this in production would hurt. Besides System.out.println is f...
How can we redirect a Java program console output to multiple files?
...to provide alternative formatting. The argument must be valid pattern for java.util.SimpleDateFormat.
Or you can also use a system_property or an env_var to specify something dynamic (either one needs to be specified as arguments)
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Reversing a linked list in Java, recursively
I have been working on a Java project for a class for a while now. It is an implementation of a linked list (here called AddressList , containing simple nodes called ListNode ). The catch is that everything would have to be done with recursive algorithms. I was able to do everything fine sans one ...
limiting java ssl debug logging
...he format for using the additional ssl flags is ssl:[flag] for example:
-Djavax.net.debug=ssl:record or -Djavax.net.debug=ssl:handshake.
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What are the effects of exceptions on performance in Java?
Question: Is exception handling in Java actually slow?
18 Answers
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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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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
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