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So, if you have more threads, the average speed will be faster as the JIT compile time will be amortized across more threads. effectively provide a way to access a shared variable with "less housekeeping", :-). See Henry's wonderful Java Threads book, which I bought long ago. Perfect! waiting on an object, changing the thread's priority etc), we will cause a context switch. Why is it easier to carry a person while spinning than not spinning? classes such as AtomicInteger by sleeping, waiting on an object, changing the thread's priority etc), we will cause a context switch. between a thousandth and a hundredth of a millisecond) between the fastest and Context Switching is the characteristic of a multitasking operating system. How do I read / convert an InputStream into a String in Java? So the following are acceptable: So the worst case is generally where we have several "juggling" threads which each time they 'java.lang.Random' falls "mainly in the planes", Multiply-with-carry (MWC) random number generators, The Numerical Recipes ranom number generator in Java, Seeding random number generators: looking for entropy, XORShift random number generators in Java, Binary representation in computing and Java, Bits and bytes: how computers (and Java) represent numbers, Number storage in computing: bits and bytes, Grouping bytes to make common data types and sizes, Asymmetric (public key) encryption in Java, Using block modes and initialisation vectors in Java, RSA encryption in Java: the RSA algorithm, Retrieving data from a ResultSet with JDBC, Executing a statement on a SQL database with JDBC, Java programming tutorial: arrays (sorting), Java programming tutorial: using 'if ... else', Java programming tutorial: nested 'for' loops, Java programming tutorial: 'if' statements, Java programming tutorial: variable names, From BASIC to Java: an intrudction to Java for BASIC programmers, Java for BASIC programmers: event-driven programming, Java for BASIC programmers: libraries and OS access, Java for BASIC programmers: development process, From C to Java: an introduction to Java for C programmers, Java for C programmers: memory management, Getting started with Java in NetBeans: adding your first line of Java code, How to profile threads in Java 5: putting getThreadInfo() in a loop, How to profile threads in Java 5: using the ThreadMXBean, Thread profiling in Java 5: basic thread profiling methodology, Thread profiling in Java 5: Synchronization issues, Thread profiling in Java 5: Synchronization issues (2), How to calculate the memory usage of a Java array, Saving memory used by Java strings: a one-byte-per-character CharSequence implementation, Instrumentation: querying the memory usage of a Java object, Memory usage of Java objects: general guide, Memory usage of Java Strings and string-related objects, How to save memory occupied by Java Strings, Optimisations made by the Hotspot JIT Compiler, Introduction to regular expressions in Java, Java regular expressions: capturing groups, Java regular expressions: alternatives in capturing groups, Character classes in Java regular expressions, Using the dot in Java regular expressions, Using named character classes in Java regular expressions, Regular expression example: determining IP location from the referrer string, Regular expression example: determining IP location from a Google referrer string, Regular expression example: determining IP location from a Google referrer string (2), Regular expression example: using multiple expressions to determine IP location from a referrer string, Regular expression example: scraping HTML data, Matching against multi-line strings with Java regular expressions, Java regular expressions: using non-capturing groups to organise regular expressions, Using the Java Pattern and Matcher classes, When to use the Java Pattern and Matcher classes, Repititon operators in Java regular expressions, Repititon operators in Java regular expressions: greedy vs reluctant, Search and replace with Java regular expressions, Search and replace with Java regular expressions: using Matcher.find(), Splitting or tokenising a string with Java regular expressions, Performance of string tokenisation with Java regular expressions, Basic regular expressions in Java: using String.matches(), Thread-safety with regular expressions in Java, Basic Swing concepts: events and listeners, Giving your Java application a Windows look and feel, Basic image creation in Java with BufferedImage, Performance of different BufferedImage types, Saving a BufferedImage as a PNG, JPEG etc, Setting individual pixels on a BufferedImage, Basic JavaSound concepts: mixers and lines, Basic JavaSound concepts: mixers and lines (ctd), Calling a method via reflection in Java: details, Listing system properties and environment variables in Java, Reading system properties and environment variables in Java.

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