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java Programming Glossary: optimize

Why 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

predict So what can be done If the compiler isn't able to optimize the branch into a conditional move you can try some hacks if..

How does the String class override the + operator?

http://stackoverflow.com/questions/11408427/how-does-the-string-class-override-the-operator

expression. For primitive types an implementation may also optimize away the creation of a wrapper object by converting directly.. converting directly from a primitive type to a string. The optimized version will not actually do a full wrapped String conversion.. String conversion first. This is a good illustration of an optimized version used by the compiler albeit without the conversion..

Is shifting bits faster than multiplying and dividing in Java? .NET?

http://stackoverflow.com/questions/1168451/is-shifting-bits-faster-than-multiplying-and-dividing-in-java-net

or can I expect the compiler VM to notice the case and optimize it in particular when the power of 2 is a literal I am mainly.. to shift operations. When optimizing many compilers can optimize a multiply or divide with a compile time constant even if it's..

Do you obfuscate your commercial Java code?

http://stackoverflow.com/questions/12088/do-you-obfuscate-your-commercial-java-code

changes makes it impossible for the JVM to efficiently optimize the code. In effect it will actually degrade the performance.. changes makes it impossible for the JVM to efficiently optimize the code. In effect it will actually degrade the performance..

How do I optimize for multi-core and multi-CPU computers in Java?

http://stackoverflow.com/questions/1223072/how-do-i-optimize-for-multi-core-and-multi-cpu-computers-in-java

do I optimize for multi core and multi CPU computers in Java I'm writing..

Why did java have the reputation of being slow? [closed]

http://stackoverflow.com/questions/2163411/why-did-java-have-the-reputation-of-being-slow

Java is slow see the benchmarks game results. Tightly optimized code written in a ahead of time compiled language C Fortran.. checks. The penalty used to be big but is now small Java 7 optimizes away a lot of redundant bounds checks . Lack of arbitrary memory.. is that allocation deallocation is blazing fast highly optimized . This is a feature of most high level languages now and due..

How do you determine the ideal buffer size when using FileInputStream?

http://stackoverflow.com/questions/236861/how-do-you-determine-the-ideal-buffer-size-when-using-fileinputstream

the knobs and dials to allow your users to test and optimize or come up with some self optimizing system . share improve..

Any recommended Java profiling tutorial? [closed]

http://stackoverflow.com/questions/2422289/any-recommended-java-profiling-tutorial

then that activity is something that you could fruitfully optimize. The difference is that you are not asking how much you are..

What is the memory consumption of an object in Java?

http://stackoverflow.com/questions/258120/what-is-the-memory-consumption-of-an-object-in-java

might allocate some temporary Objects on the stack. It may optimize some variables or method calls totally out of existence replacing.. or loops i.e. compile two versions of a method each optimized for a certain situation then decide up front which one to call...

Difference between Statement and PreparedStatement

http://stackoverflow.com/questions/3271249/difference-between-statement-and-preparedstatement

the incoming SQL query 2. Compile the SQL query 3. Plan optimize the data acquisition path 4. Execute the optimized query acquire.. 3. Plan optimize the data acquisition path 4. Execute the optimized query acquire and return data A Statement will always proceed..

Difference between string object and string literal [duplicate]

http://stackoverflow.com/questions/3297867/difference-between-string-object-and-string-literal

Java - Transparent JScrollPane

http://stackoverflow.com/questions/3517722/java-transparent-jscrollpane

Opacity is a boolean property of Swing components used to optimize drawing true The component agrees to paint all of the bits contained..

Best way to convert an ArrayList to a string

http://stackoverflow.com/questions/599161/best-way-to-convert-an-arraylist-to-a-string

is going to be just fine as the javac compiler will optimize the string concatenation as a series of append operations on.. Ljava lang String As can be seen the compiler optimizes that loop by using a StringBuilder so performance shouldn't.. on each iteration. Which I have noted previously. The most optimized technique to use will be the response by Paul Tomblin as it..

for loop optimization

http://stackoverflow.com/questions/6093537/for-loop-optimization

lang Str ing V 30 iinc 3 1 33 goto 17 36 return It doesn't optimize for me. java version 1.6.0_22 Java TM SE Runtime Environment..

Declaring variables inside or outside of a loop

http://stackoverflow.com/questions/8803674/declaring-variables-inside-or-outside-of-a-loop

thrown away at the end of it so there is no possibility to optimize there. EDIT this is something that I wrote in a comment below.. this requirement and if it does not satisfy it then go optimize things. And what usually ends up happening is that you find..