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java Programming Glossary: operationsWhy is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array eliminates the branch and replaces it with some bitwise operations. Note that this hack is not strictly equivalent to the original..
http://stackoverflow.com/questions/13011392/jsf-service-layer So if an exception occurs during one of any DAO operations using @PersistenceContext EntityManager which is invoked by..
Why is Java Vector class considered obsolete or deprecated? http://stackoverflow.com/questions/1386275/why-is-java-vector-class-considered-obsolete-or-deprecated do. Generally you want to synchronize a whole sequence of operations. Synchronizing individual operations is both less safe if you.. a whole sequence of operations. Synchronizing individual operations is both less safe if you iterate over a Vector for instance..
Java NIO FileChannel versus FileOutputstream performance / usefulness http://stackoverflow.com/questions/1605332/java-nio-filechannel-versus-fileoutputstream-performance-usefulness Time taken time2 time1 ms java optimization file nio operations share improve this question My experience with larger files..
How do I return a boolean from AsyncTask? http://stackoverflow.com/questions/16752073/how-do-i-return-a-boolean-from-asynctask my code to use AsyncTasks to perform the various ftp operations but how can I pass back a boolean value if a connection is successfully..
What causes javac to issue the “uses unchecked or unsafe operations” warning http://stackoverflow.com/questions/197986/what-causes-javac-to-issue-the-uses-unchecked-or-unsafe-operations-warning causes javac to issue the &ldquo uses unchecked or unsafe operations&rdquo warning For example javac Foo.java Note Foo.java uses.. javac Foo.java Note Foo.java uses unchecked or unsafe operations. Note Recompile with Xlint unchecked for details. java generics..
Eclipse - no Java (JRE) / (JDK) … no virtual machine http://stackoverflow.com/questions/2030434/eclipse-no-java-jre-jdk-no-virtual-machine to run your program but again a JVM will allow for more operations. Even though the default registered Java in Eclipse is the one..
String, StringBuffer, and StringBuilder http://stackoverflow.com/questions/2971315/string-stringbuffer-and-stringbuilder If your string can change example lots of logic and operations in the construction of the string and will only be accessed..
Download a file with Android, and showing the progress in a ProgressDialog http://stackoverflow.com/questions/3028306/download-a-file-with-android-and-showing-the-progress-in-a-progressdialog you must manually spawn new threads to run CPU blocking operations . Download service can look like this public class DownloadService..
When to use LinkedList<> over ArrayList<>? http://stackoverflow.com/questions/322715/when-to-use-linkedlist-over-arraylist resizing array. As with standard linked list and array operations the various methods will have different algorithmic runtimes... worst case but constant on average. So depending on the operations you intend to do you should choose the implementations accordingly... existing iterators to insert and remove elements. These operations can then be done in O 1 by changing the list locally only. In..
How to rotate an image gradually in Swing? http://stackoverflow.com/questions/3405799/how-to-rotate-an-image-gradually-in-swing context's transform to effect the rotation. Note that the operations are performed in the apparent reverse of the declaration order..
http://stackoverflow.com/questions/435553/java-reflection-performance can not be performed. Consequently reflective operations have slower performance than their non reflective counterparts..
http://stackoverflow.com/questions/490091/java-generics attempt to create strongly typed classes to do generic operations. ArrayList String aList new ArrayList String aList.add One String.. size etc. However there are many implementations of List operations that may choose to obey the contract in various ways e.g. ArrayList..
Can you find all classes in a package using reflection? http://stackoverflow.com/questions/520328/can-you-find-all-classes-in-a-package-using-reflection to find this information. This will be via filesystem operations though and not reflection. There might even be libraries that..
Trust Store vs Key Store - creating with keytool http://stackoverflow.com/questions/6340918/trust-store-vs-key-store-creating-with-keytool question and keytool is just a tool to perform various operations on them import export list ... . The javax.net.ssl.keyStore..
Why does Java have transient variables? http://stackoverflow.com/questions/910374/why-does-java-have-transient-variables the readObject method is called to perform any operations necessary to restore the state of the object back to the state..
http://stackoverflow.com/questions/12954193/why-does-division-by-zero-with-floating-point-or-double-precision-numbers-not the IEEE 754 standard which is what Java's Floating Point Operations are based on. Why doesn't division by zero or overflow or underflow..
Calling JMX MBean method from a shell script http://stackoverflow.com/questions/1751130/calling-jmx-mbean-method-from-a-shell-script port 9003 #No User and password so pass ' ' echo Available Operations for com.company.data type datasystem id 0 java jar cmdLineJMXJar..
http://stackoverflow.com/questions/18289623/how-to-use-asynctask return my aquired values In general you should do Network Operations in a Seperate Thread doInBackground since you do not want your..
Move / Copy File Operations in Java http://stackoverflow.com/questions/300559/move-copy-file-operations-in-java Copy File Operations in Java Is there a standard Java library that handles common..
http://stackoverflow.com/questions/448181/batch-inserts-with-jpa-ejb3 JPA 1.0 Specification Section 4.10 Bulk Update and Delete Operations Hibernate Core reference guide Chapter 13. Batch processing..
How to iteratively generate k elements subsets from a set of size n in java? http://stackoverflow.com/questions/4504974/how-to-iteratively-generate-k-elements-subsets-from-a-set-of-size-n-in-java perform as could be expected for a doubly linked list. Operations that index into the list will traverse the list from the beginning..
How can a primitive float value be -0.0? What does that mean? http://stackoverflow.com/questions/6724031/how-can-a-primitive-float-value-be-0-0-what-does-that-mean value 0.0 See Java Floating Point Number Intricacies Operations Involving Negative Zero ... 0.0 0.0 0.0 share improve this..
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