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How do I programmatically change file permissions?
In Java, I'm dynamically creating a set of files and I'd like to change the file permissions on these files on a linux/unix file system. I'd like to be able to execute the Java equivalent of chmod . Is that possible Java 5? If so, how?
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How can I determine whether a Java class is abstract by reflection
...vy startup. I can't find anything obviously like isAbstract() in the Class.java docs.
3 Answers
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Scala: write string to file in one statement
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A concise one line:
import java.io.PrintWriter
new PrintWriter("filename") { write("file contents"); close }
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Where is array's length property defined?
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Arrays are special objects in java, they have a simple attribute named length which is final.
There is no "class definition" of an array (you can't find it in any .class file), they're a part of the language itself.
10.7. Array Members
The membe...
Eclipse comment/uncomment shortcut?
...t so far I haven't found solutions for comment/uncomment shortcut on both Java class editor and jsf faceted webapp XHTML file editor :
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Trusting all certificates with okHttp
...stManager() {
@Override
public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
}
@Override
public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType)...
How do you automate Javascript minification for your Java web applications?
I'm interested in hearing how you prefer to automate Javascript minification for your Java web apps. Here are a few aspects I'm particularly interested in:
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What is the difference between Collection and List in Java?
What is the difference between Collection and List in Java? When should I use which?
7 Answers
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How can you speed up Eclipse?
...Kepler SR2 (4.3.2) in 7 seconds and in Luna (4.4.0) in 10 seconds. All are Java EE bundles. Newer versions have more bundled plugins, but still the trend is obvious. (by "same" workspace I mean: same (additionally installed) plugins used, same projects checked out from version control).
Launching ...
object==null or null==object?
...tion of putting the constant on the left side of == isn't really useful in Java since Java requires that the expression in an if evaluate to a boolean value, so unless the constant is a boolean, you'd get a compilation error either way you put the arguments. (and if it is a boolean, you shouldn't be...