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Java Platform Debugger Architecture
The Java Platform Debugger Architecture (JPDA) is a collection of APIs to debug Java code. * Java Debugger Interface (JDI) – defines a high-level Java language interface that developers can easily use to write remote debugger application tools. * Java Virtual Machine Tools Interface (JVMTI) – a native interface that helps to inspect the state and to control the execution of applications running in the Java Virtual Machine (JVM). * Java Virtual Machine Debug Interface (JVMDI) – ''JVMDI was deprecated in J2SE 5.0 in favor of JVM TI, and was removed in Java SE 6.'' * Java Debug Wire Protocol (JDWP) – defines communication between debuggee (a Java application) and debugger processes. Java Debugger Interface (JDI) JDI is the highest-layer of the Java Platform Debugger Architecture. It allows to access the JVM and the internal variables of the debugged program. It also allows to set breakpoints, stepping, and handle threads. See also * Eclipse, an open-source IDE integrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Debugging
In engineering, debugging is the process of finding the Root cause analysis, root cause, workarounds, and possible fixes for bug (engineering), bugs. For software, debugging tactics can involve interactive debugging, control flow analysis, Logfile, log file analysis, monitoring at the application monitoring, application or system monitoring, system level, memory dumps, and profiling (computer programming), profiling. Many Programming language, programming languages and Programming tool, software development tools also offer programs to aid in debugging, known as debuggers. Etymology The term ''bug'', in the sense of defect, dates back at least to 1878 when Thomas Edison wrote "little faults and difficulties" in his inventions as "Bugs". A popular story from the 1940s is from Admiral Grace Hopper. While she was working on a Harvard Mark II, Mark II computer at Harvard University, her associates discovered a moth stuck in a relay that impeded operation and wrote in a log book ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java (programming Language)
Java is a High-level programming language, high-level, General-purpose programming language, general-purpose, Memory safety, memory-safe, object-oriented programming, object-oriented programming language. It is intended to let programmers ''write once, run anywhere'' (Write once, run anywhere, WORA), meaning that compiler, compiled Java code can run on all platforms that support Java without the need to recompile. Java applications are typically compiled to Java bytecode, bytecode that can run on any Java virtual machine (JVM) regardless of the underlying computer architecture. The syntax (programming languages), syntax of Java is similar to C (programming language), C and C++, but has fewer low-level programming language, low-level facilities than either of them. The Java runtime provides dynamic capabilities (such as Reflective programming, reflection and runtime code modification) that are typically not available in traditional compiled languages. Java gained popularity sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java Virtual Machine Tools Interface
Java Virtual Machine Tool Interface (JVMTI, or more properly, JVM TI) was introduced in J2SE 5.0 (''Tiger''). This interface allows a program to inspect the state and to control the execution of applications running in the Java Virtual Machine (JVM). JVMTI is designed to provide an Application Programming Interface (API) for the development of tools that need access to the state of the JVM. Examples for such tools are debuggers or profilers. The JVMTI is a native interface of the JVM. A library, written in C or C++, is loaded during the initialization of the JVM. The library has access to the JVM state by calling JVMTI and JNI (Java Native Interface) functions and can register to receive JVMTI events using event handler functions that are called by the JVM when such an event occurs. JVMTI was defined through the Java Community Process by JSR-163, the specification for the Java Platform Profiling Architecture. The JVMTI replaces the JVMPI (Java Virtual Machine Profiling Inter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java Virtual Machine
A Java virtual machine (JVM) is a virtual machine that enables a computer to run Java programs as well as programs written in other languages that are also compiled to Java bytecode. The JVM is detailed by a specification that formally describes what is required in a JVM implementation. Having a specification ensures interoperability of Java programs across different implementations so that program authors using the Java Development Kit (JDK) need not worry about idiosyncrasies of the underlying hardware platform. The JVM reference implementation is developed by the OpenJDK project as open source code and includes a JIT compiler called HotSpot. The commercially supported Java releases available from Oracle are based on the OpenJDK runtime. Eclipse OpenJ9 is another open source JVM for OpenJDK. JVM specification The Java virtual machine is an abstract (virtual) computer defined by a specification. It is a part of the Java runtime environment. The garbage collection ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java Debug Wire Protocol
In computing, the Java Debug Wire Protocol (JDWP) is a communication protocol which is part of the Java Platform Debugger Architecture. It is used for communication between a debugger and the Java Virtual Machine, which it debugs. It allows to debug processes on a different computer. It can work over a network socket or through shared memory. The protocol is implemented in the software library libjdwp. It can be activated using the -Xrunjdwp parameter of Java. Metasploit includes a module for JDWP. It can exploit it using various scripts, which have functions such as injecting a Java class that executes a shell command, returns operating system details or injects an arbitrary class. References External links Java Debug Wire Protocol - Java SE DocumentationHacking the Java Debug Wire Protocolby IOActive IOActive is an independent computer security services firm active in several areas. They are known for reporting high severity security vulnerabilities in a variety of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Debugger
A debugger is a computer program used to test and debug other programs (the "target" programs). Common features of debuggers include the ability to run or halt the target program using breakpoints, step through code line by line, and display or modify the contents of memory, CPU registers, and stack frames. The code to be examined might alternatively be running on an '' instruction set simulator'' (ISS), a technique that allows great power in its ability to halt when specific conditions are encountered, but which will typically be somewhat slower than executing the code directly on the appropriate (or the same) processor. Some debuggers offer two modes of operation, full or partial simulation, to limit this impact. An exception occurs when the program cannot normally continue because of a programming bug or invalid data. For example, the program might have tried to use an instruction not available on the current version of the CPU or attempted to access unavailable or pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JPDA Architecture
The Java Platform Debugger Architecture (JPDA) is a collection of APIs to debug Java code. * Java Debugger Interface (JDI) – defines a high-level Java language interface that developers can easily use to write remote debugger application tools. * Java Virtual Machine Tools Interface (JVMTI) – a native interface that helps to inspect the state and to control the execution of applications running in the Java Virtual Machine (JVM). * Java Virtual Machine Debug Interface (JVMDI) – ''JVMDI was deprecated in J2SE 5.0 in favor of JVM TI, and was removed in Java SE 6.'' * Java Debug Wire Protocol (JDWP) – defines communication between debuggee (a Java application) and debugger processes. Java Debugger Interface (JDI) JDI is the highest-layer of the Java Platform Debugger Architecture. It allows to access the JVM and the internal variables of the debugged program. It also allows to set breakpoints, stepping, and handle threads. See also * Eclipse, an open-source IDE integrated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breakpoint
In software development, a breakpoint is an intentional stopping or pausing place in a computer program, program, put in place for debugging purposes. It is also sometimes simply referred to as a pause. More generally, a breakpoint is a means of acquiring knowledge about a program during its execution. During the Interrupt, interruption, the programmer inspects the test System platform, environment (general-purpose registers, virtual memory, memory, logs, Computer file, files, etc.) to find out whether the program is functioning as expected. In practice, a breakpoint consists of one or more conditions that determine when a program's execution should be interrupted. History Breakpoints were invented for ENIAC, one of the earliest digital computers, by programmer Betty Holberton. In the initial design of ENIAC, program flow was set by plugging cables from one unit to another. To make the program stop at a certain point, a cable was removed, called a ''breakpoint''. Types of bre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stepping (debugging)
Program animation or stepping refers to the debugging method of executing code one instruction or line at a time. The programmer may examine the state of the program, machine, and related data before and after execution of a particular line of code. This allows the programmer to evaluate the effects of each statement or instruction in isolation, and thereby gain insight into the behavior (or misbehavior) of the executing program. Nearly all modern IDEs and debuggers support this mode of execution. History Instruction stepping or single cycle originally referred to the technique of stopping the processor clock and manually advancing it one cycle at a time. For this to be possible, three things are required: * A control that allows the clock to be stopped (e.g. a "Stop" button). * A second control that allows the stopped clock to be manually advanced by one cycle (e.g. An "instruction step" switch and a "Start" button). * Some means of recording the state of the processor after ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eclipse (software)
Eclipse is an integrated development environment (IDE) used in computer programming. It contains a base workspace and an extensible plug-in system for customizing the environment. It had been the most popular IDE for Java development until 2016, when it was surpassed by IntelliJ IDEA. Eclipse is written mostly in Java and its primary use is for developing Java applications, but it may also be used to develop applications in other programming languages via plug-ins, including Ada, ABAP, C, C++, C#, Clojure, COBOL, D, Erlang, Fortran, Groovy, Haskell, HLASM, JavaScript, Julia, Lasso, Lua, NATURAL, Perl, PHP, PL/I, Prolog, Python, R, Rexx, Ruby (including Ruby on Rails framework), Rust, Scala, and Scheme. It can also be used to develop documents with LaTeX (via a TeXlipse plug-in) and packages for the software Mathematica. Development environments include the Eclipse Java development tools (JDT) for Java and Scala, Eclipse CDT for C/C++, and Eclipse PDT for P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IntelliJ IDEA
IntelliJ IDEA () is an integrated development environment (IDE) written in Java for developing computer software written in Java, Kotlin, Groovy, and other JVM-based languages. It is developed by JetBrains (formerly known as IntelliJ) and is available as an Apache 2 Licensed community edition with proprietary license for some bundled plugins, and in a proprietary commercial edition. Both can be used for commercial development. History The first version of IntelliJ IDEA was released in January 2001 and was one of the first available Java IDEs with advanced code navigation and code refactoring capabilities integrated. In 2009, JetBrains released the source code for IntelliJ IDEA under the open-source Apache License 2.0. JetBrains also began distributing a limited version of IntelliJ IDEA consisting of open-source features under the moniker Community Edition. The commercial Ultimate Edition provides additional features and remains available for a fee. In a 2010 ''InfoWorld'' r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NetBeans
NetBeans is an integrated development environment (IDE) for Java (programming language), Java. NetBeans allows applications to be developed from a set of modular software components called ''modules''. NetBeans runs on Microsoft Windows, Windows, macOS, Linux and Oracle Solaris, Solaris. In addition to Java development, it has extensions for other languages like PHP, C (programming language), C, C++, HTML5, and JavaScript. Applications based on NetBeans, including the NetBeans IDE, can be extended by third party developers. History Define $dx = 25 # shift text to right side of bar Define $dy = -3 # shift text to right side of bar ImageSize = width:160 height:1000 PlotArea = width:50 height:980 left:50 bottom:10 DateFormat = mm/dd/yyyy Define $start = 06/01/2003 Define $now = 01/31/2023 Period = from:$start till:$now TimeAxis = orientation:vertical ScaleMajor = unit:year increment:1 start:2004 PlotData= bar:Leaders color:blue width:25 mark:(line,white) align:left fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
