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Quotes & Sayings About Programming In Java

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Top Programming In Java Quotes

Programming In Java Quotes By James Gosling

All of us who attended the meeting - including Microsoft - unanimously agreed that unilaterally extending the Java programming language would hurt compatibility among Java tools and programs, would injure other tools vendors and would damage customers' ability to run a Java-based software product on whatever platform they wished. — James Gosling

Programming In Java Quotes By Brian Goetz

The possibility of incorrect results in the presence of unlucky timing is so important in concurrent programming that it has a name: a race condition. A race condition occurs when the correctness of a computation depends on the relative timing or interleaving of multiple threads by the runtime; in other words, when getting the right answer relies on lucky timing. — Brian Goetz

Programming In Java Quotes By Guido Van Rossum

Now, it's my belief that Python is a lot easier than to teach to students programming and teach them C or C++ or Java at the same time because all the details of the languages are so much harder. Other scripting languages really don't work very well there either. — Guido Van Rossum

Programming In Java Quotes By Brian Goetz

Once an object escapes, you have to assume that another class or thread may, maliciously or carelessly, misuse it. This is a compelling reason to use encapsulation: it makes it practical to analyze programs for correctness and harder to violate design constraints accidentally. — Brian Goetz

Programming In Java Quotes By Guido Van Rossum

In my daily work, I work on very large, complex, distributed systems built out of many Python modules and packages. The focus is very similar to what you find, for example, in Java and, in general, in systems programming languages. — Guido Van Rossum

Programming In Java Quotes By Brian Goetz

Accessing shared, mutable data requires using synchronization; one way to avoid this requirement is to not share. If data is only accessed from a single thread, no synchronization is needed. This technique, thread confinement, is one of the simplest ways to achieve thread safety. When an object is confined to a thread, such usage is automatically thread-safe even if the confined object itself is not. — Brian Goetz

Programming In Java Quotes By Larry Ellison

We think we're going to be especially strong in platform where we have our two platform brands: our database brand is the Oracle Database 12c, and our programming language brand is this thing called Java. — Larry Ellison

Programming In Java Quotes By Bjarne Stroustrup

However, when Java is promoted as the sole programming language, its flaws and limitations become serious. — Bjarne Stroustrup

Programming In Java Quotes By Brian Goetz

Compound actions on shared state, such as incrementing a hit counter (read-modify-write) or lazy initialization (check-then-act), must be made atomic to avoid race conditions. Holding a lock for the entire duration of a compound action can make that compound action atomic. However, just wrapping the compound action with a synchronized block is not sufficient; if synchronization is used to coordinate access to a variable, it is needed everywhere that variable is accessed. Further, when using locks to coordinate access to a variable, the same lock must be used wherever that variable is accessed. — Brian Goetz

Programming In Java Quotes By Joshua Bloch

Learning the art of programming, like most other disciplines, consists of first learning the rules and then learning when to break them. — Joshua Bloch

Programming In Java Quotes By Brian Goetz

It is far easier to design a class to be thread-safe than to retrofit it for thread safety later. — Brian Goetz

Programming In Java Quotes By Brian Goetz

Sometimes abstraction and encapsulation are at odds with performance - although not nearly as often as many developers believe - but it is always a good practice first to make your code right, and then make it fast. — Brian Goetz

Programming In Java Quotes By Brian Goetz

Immutable objects are simple. They can only be in one state, which is carefully controlled by the constructor. One of the most difficult elements of program design is reasoning about the possible states of complex objects. Reasoning about the state of immutable objects, on the other hand, is trivial.

Immutable objects are also safer. Passing a mutable object to untrusted code, or otherwise publishing it where untrusted code could find it, is dangerous - the untrusted code might modify its state, or, worse, retain a reference to it and modify its state later from another thread. On the other hand, immutable objects cannot be subverted in this manner by malicious or buggy code, so they are safe to share and publish freely without the need to make defensive copies. — Brian Goetz

Programming In Java Quotes By Brian Goetz

Whenever more than one thread accesses a given state variable, and one of them might write to it, they all must coordinate their access to it using synchronization. — Brian Goetz

Programming In Java Quotes By Anonymous

Generative testing is an approach to testing software that was made popular by the QuickCheck library. Originally written in Haskell and since ported to several other programming languages (Ruby, Python, C, C++, Objective-C, Smalltalk, Java, JavaScript, Erlang, Scala, Clojure...), the QuickCheck library allows the developer to separate test logic from the generation of test cases. This means that, as developers, we can spend less time instructing the compiler how to test our code, and focus instead on what properties we expect our code to have. — Anonymous

Programming In Java Quotes By Brian Goetz

When a field is declared volatile, the compiler and runtime are put on notice that this variable is shared and that operations on it should not be reordered with other memory operations. Volatile variables are not cached in registers or in caches where they are hidden from other processors, so a read of a volatile variable always returns the most recent write by any thread. — Brian Goetz

Programming In Java Quotes By Brian Goetz

Locking can guarantee both visibility and atomicity; volatile variables can only guarantee visibility. — Brian Goetz

Programming In Java Quotes By Chris Fehily

Microsoft SQL Server, Oracle, DB2, and PostgreSQL let you create user-defined types (UDTs). The simplest UDT is a standard or built-in data type (CHARACTER, INTEGER, and so on) with additional check and other constraints. You can define the data type marital_status, for example, as a single-character CHARACTER data type that allows only the values S, M, W, D, or NULL (for single, married, widowed, divorced, or unknown). More-complex UDTs are similar to classes in object-oriented programming languages such as Java or Python. You can define a UDT once and use it in multiple tables, rather than repeat its definition in each table in which it's used. Search your DBMS documentation for user-defined type. UDTs are created in standard SQL with the statement CREATE TYPE. — Chris Fehily

Programming In Java Quotes By Brian Goetz

Just as it is a good practice to make all fields private unless they need greater visibility, it is a good practice to make all fields final unless they need to be mutable. — Brian Goetz

Programming In Java Quotes By Brian Goetz

From the perspective of a class C, an alien method is one whose behavior is not fully specified by C. This includes methods in other classes as well as overrideable methods (neither private nor final) in C itself. Passing an object to an alien method must also be considered publishing that object. Since you can't know what code will actually be invoked, you don't know that the alien method won't publish the object or retain a reference to it that might later be used from another thread. — Brian Goetz

Programming In Java Quotes By Brian Goetz

Debugging tip: For server applications, be sure to always specify the -server JVM command line switch when invoking the JVM, even for development and testing. The server JVM performs more optimization than the client JVM, such as hoisting variables out of a loop that are not modified in the loop; code that might appear to work in the development environment (client JVM) can break in the deployment environment (server JVM). — Brian Goetz