What is the Java 2D rendering process?
1. Construct a Java 2D graphics context that contains an abstract representation of different drawing operations, fonts, color management and other info.
2. Using the Java 2D graphics context, create the desired shapes and objects.
3. Apply graphics attributes such as color, font and line width to the objects.
4. Render the graphics onto the screen using appropriate methods such as drawLine(), drawString(), fillRect() and similar methods.
5. Perform any necessary post-processing operations such as blending, anti-aliasing and other image manipulation.
6. Refresh the graphics context with the new numbers.
How much disk space is required for JRE and Java update?
The amount of disk space required for the Java Runtime Environment (JRE) and the Java update is dependent on which version of Java is installed. Generally, a typical installation of the latest Java update requires at least 200 MB of free disk space.
What is the JNI (Java Native Interface)?
The Java Native Interface (JNI) is a programming framework that allows Java code running in a Java Virtual Machine (JVM) to call and be called by native applications (programs specific to a hardware and operating system platform) and libraries written in other languages such as C, C++ and assembly. It is based on a formal specification and includes dynamic loading of native libraries, registration of native methods, and call-in/call-out operations, among other features. It is commonly used to access operating-system features, hardware features, and other non-java language features, such as library functions written in C or C++.
Is Android a good career path for a Java developer?
Yes, Android is a great career path for a Java developer. Android developers use Java to create mobile applications and are in demand in many industries. According to Burning Glass Job Market Intelligence, job postings for Android developers increased by 32% over the last year. Android developers also have the potential to earn higher salaries compared to many other types of developers.
What is Java instrumentation API?
Java instrumentation API is a set of tools used to create dynamic tools and agents that can extend and modify the existing Java code without changing the underlying applications. It is part of the core Java platform and provides developers with the ability to create agents to monitor and modify the behaviour of running applications. It allows developers to add profiling and logging capabilities, modify classes to add extra safety or debugging checks, or modify application behaviour at run time.
How do I change the size of JConsole in Java?
Unfortunately, there is no way to change the size of JConsole directly. However, you can adjust the size of the window that contains JConsole by clicking and dragging the sides or corners of the window.
What is OutOfMemoryError in Java?
OutOfMemoryError in Java is an error thrown by the Java Virtual Machine (JVM) when it isn’t able to allocate enough memory for the requested operation. It is a type of runtime exception thrown when an application attempts to use more memory than is available. OutOfMemoryError indicates that the JVM does not have enough memory available to perform the requested operation. It can also occur because of memory leaks within an application.
What is JVM heap memory in Java?
JVM heap memory in Java is the memory space inside the JVM where the Java objects are stored. When an application is executed, the JVM allocates a certain amount of memory to the heap. This memory is shared between all threads within the application, and it stores objects and their associated instance variables. Often, if an application uses more memory than is allocated to the JVM heap, the application will fail due to a lack of available memory.
What is linear optimization in Java?
Linear optimization in Java is a process of finding the best solution to a problem from a set of potential solutions. It involves minimizing an objective function subject to constraints, which can be represented by linear equations. This can be done by using some of the linear programming libraries available for Java such as LPSolve or JuMP.
When a connection is first established, the readyState value will be CONNECTING (0). If the connection is established and ready for communication, the value will be OPEN (1). When the connection is closing, the readyState value will be CLOSING (2). When the connection has been closed, the value will be CLOSED (3).