What is a StackOverflowError in Java?
A StackOverflowError is simply signals that there is no more memory available. It extends the VirtualMachineError class, which indicates that the JVM (Java Virtual Machine) is broken, or it has run out of resources and cannot operate.
If you have a function like:
In the above code myFunction() will keep calling itself, getting deeper and deeper, and when the space used to keep track of what functions you're in is filled up, you get the stackoverflow error . The common cause for a stack overflow is a bad recursive call. Typically, this is caused when your recursive functions doesn't have the correct termination condition, so it ends up calling itself forever.
Reason for StackOverflowError
Parameters and local variables are allocated on the stack . The stack typically lives at the upper end of your address space and as it is used up it heads towards the bottom of the address space. Your process also has a heap, which lives at the bottom end of your process. As you allocate memory, this heap can grow towards the upper end of your address space. As you can see, there is a potential for the heap to "collide" with the stack. If there is no space for a new stack frame then, the StackOverflowError is thrown by the Java Virtual Machine (JVM).If the stack is full you can't push, if you do you'll get stack overflow error.
If the stack is empty you can't pop, if you do you'll get stack underflow error.
What is a stacktrace?
A stacktrace is a very helpful debugging tool. It is a list of the method calls that the application was in the middle of when an Exception was thrown. This is very useful because it doesn't only show you where the error happened, but also how the program ended up in that place of the code.
More about.... stacktrace in java
- Java Interview Questions-Core Faq - 1
- Java Interview Questions-Core Faq - 2
- Java Interview Questions-Core Faq - 3
- Important features of Java
- What is the difference between JDK and JRE?
- What gives Java its 'write once and run anywhere' nature?
- What is JVM and is it platform independent?
- What is Just-In-Time (JIT) compiler?
- What is the garbage collector in Java?
- What is NullPointerException in Java
- Difference between Stack and Heap memory in Java
- How to set the maximum memory usage for JVM?
- What is numeric promotion?
- Why do we need Generic Types in Java?
- What does it mean to be static in Java?
- What are final variables in Java?
- How Do Annotations Work in Java?
- How do I use the ternary operator in Java?
- What is instanceof keyword in Java?
- How ClassLoader Works in Java?
- What are fail-safe and fail-fast Iterators in Java
- What are method references?
- "Cannot Find Symbol" compile error
- Difference between system.gc() and runtime.gc()
- How to convert TimeStamp to Date in Java?
- Does garbage collection guarantee that a program will not run out of memory?
- How setting an Object to null help Garbage Collection?
- How do objects become eligible for garbage collection?
- How to calculate date difference in Java
- Difference between Path and Classpath
- Is Java "pass-by-reference" or "pass-by-value"?
- Difference between static and nonstatic methods java
- Why Java does not support pointers?
- What is package in Java?
- What are wrapper classes?
- What is singleton class in Java?
- Difference between Java Local Variable, Instance Variable and a Class Variable?
- Can a top level class be private or protected in java
- Are Polymorphism , Overloading and Overriding similar concepts?
- How to Use Locks in Java
- Why Multiple Inheritance is Not Supported in Java
- Why Java is not a pure Object Oriented language?
- Why can't a Java class be declared as static?
- Difference between Abstract class and Interface in Java
- Why do I need to override the equals and hashCode methods in Java?
- Why does Java not support operator overloading?
- What’s meant by anonymous class in Java?
- Static Vs Dynamic class loading in Java
- Why am I getting a NoClassDefFoundError in Java?
- How to generate random integers within a specific range in Java
- What's the meaning of System.out.println in Java?
- What is the purpose of Runtime and System class?
- What is finally block in Java?
- What is difference between final, finally and finalize?
- What is try-with-resources in java?
- What is a stacktrace?
- What is the meaning of immutable in terms of String?
- What are different ways to create a string object in Java?
- Difference between String and StringBuffer/StringBuilder in Java
- What is the difference between creating String as new() and literal?
- How do I convert String to Date object in Java?
- How do I create a Java string from the contents of a file?
- Why is char preferred over String for storage of password in Java
- What is I/O Filter and how do I use it in Java?
- Serialization and Deserialization in Java
- Understanding transient variables in Java
- What is Externalizable in Java?
- What is the purpose of serialization/deserialization in Java?
- What is the Difference between byte stream and Character streams
- How to append text to an existing file in Java
- Read/convert an InputStream to a String in Java
- What is the difference between Reader and InputStream in Java
- Introduction to Java threads
- What is synchronization Java?
- Static synchronization Vs non static synchronization in Java
- Java Thread Deadlock Tutorial
- What is Daemon thread in Java
- Difference between implements Runnable and extends Thread in Java
- What is the volatile keyword in Java
- What are the basic interfaces of Java Collections Framework
- What are the differences between ArrayList and Vector in Java
- What is the difference between ArrayList and LinkedList?
- What is the difference between List and Set in Java
- Difference between HashSet and HashMap in Java
- Difference between HashMap and Hashtable in Java?
- How does the hashCode() method of java works?
- Difference between capacity() and size() of Vector in Java