Jan 3, 2025 · In this article, we are going to discuss about JVM Stack Area in depth. In Java, each thread has its stack called the Run-Time Stack, created when the thread starts. The memory for a Java Virtual Machine stack does not need to be contiguous. The JVM manages this stack by pushing and popping frames.

Jun 14, 2015 · First of all, stack frame is part of JVM stack, not Heap [JVM memory is divided in 5 parts: Method Area, Heap, Stack, PC Register and Native Memory.] To answer your question, stack frame is divided into three parts: local variable array, frame data and operand stack.

Each Java Virtual Machine thread has a private Java Virtual Machine stack, created at the same time as the thread. A Java Virtual Machine stack stores frames ( §2.6 ).

Jun 24, 2019 · JVM 执行 Java 程序时需要装载各种数据到内存中，不同的数据存放在不同的内存区中（逻辑上），这些数据内存区称作 运行时数据区（Run-Time Data Areas）。 其中 JVM Stack（Stack 或虚拟机栈、线程栈、栈）中存放的就是 Stack Frame（Frame 或栈帧、方法栈）。 一个线程对应一个 JVM Stack。 JVM Stack 中包含一组 Stack Frame。 线程每调用一个方法就对应着 JVM Stack 中 Stack Frame 的入栈，方法执行完毕或者异常终止对应着出栈（销毁）。 …

Nov 24, 2013 · Explains internal architecture of Java Virtual Machine (JVM) in simple terms describing key components and how memory is updated during execution.

Nov 17, 2018 · Each position where types are explicitly listed is known as a stack map frame. The StackMapTable attribute contains a list of frames in order, though they are usually expressed as a difference from the previous frame in order to reduce data size.

Each entry in the stack is called Stack Frame or Activation Record. The stack frame basically consists of three parts: Local Variable Array, Operand Stack & Frame Data.

The Java ® Virtual Machine Specification Next: The Java ® Virtual Machine Specification Java SE 24 Edition. Tim Lindholm. Frank Yellin. Gilad Bracha. Alex Buckley. Daniel Smith. 2025-02-07 Legal Notice ... Frames 2.6.1. Local Variables 2.6.2. Operand Stacks 2.6.3. Dynamic Linking

Stack map frames are essential components of the StackMapTable attribute in the Java Virtual Machine (JVM). They enable the JVM to efficiently manage verification of bytecode during execution, ensuring that the stack and local variable states are consistent and accurate.

By understanding JVM memory management and the roles of heap, stack, and PermGen (or Metaspace), you can optimize your Java application’s performance, prevent memory leaks, and manage resources efficiently.