Package java.lang

Class StackTraceElement

  • All Implemented Interfaces:
    Serializable
    public final class StackTraceElement
extends Object
implements Serializable
    An element in a stack trace. Each element represents a single stack frame. All stack frames except for the one at the top of the stack represent a method invocation. The frame at the top of the stack represents the execution point at which the stack trace was generated. Typically, this is the point at which the throwable corresponding to the stack trace was created.
    See Also:
    Serialized Form

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean equals​(Object obj)
      Returns true if the specified object is another StackTraceElement instance representing the same execution point as this instance.
      String getClassName()
      Returns the fully qualified name of the class containing the execution point represented by this stack trace element.
      String getFileName()
      Returns the name of the source file containing the execution point represented by this stack trace element.
      int getLineNumber()
      Returns the line number of the source line containing the execution point represented by this stack trace element.
      String getMethodName()
      Returns the name of the method containing the execution point represented by this stack trace element.
      int hashCode()
      Returns a hash code value for this stack trace element.
      String toString()
      Returns a string representation of this stack trace element.

    • Constructor Detail

      • StackTraceElement

        public StackTraceElement()

    • Method Detail

      • equals

        public boolean equals​(@Nullable
                      Object obj)
        Returns true if the specified object is another StackTraceElement instance representing the same execution point as this instance. Two stack trace elements a and b are equal if and only if: 
             equals(a.getFileName(), b.getFileName()) &&
     a.getLineNumber() == b.getLineNumber()) &&
     equals(a.getClassName(), b.getClassName()) &&
     equals(a.getMethodName(), b.getMethodName())
        Overrides:
        equals in class Object
        Parameters:
        obj - the object to be compared with this stack trace element.
        Returns:
        true if the specified object is another StackTraceElement instance representing the same execution point as this instance.
        See Also:
        Object.hashCode(), HashMap

      • getClassName

        public String getClassName()
        Returns the fully qualified name of the class containing the execution point represented by this stack trace element.
        Returns:
        the fully qualified name of the Class containing the execution point represented by this stack trace element.

      • getFileName

        @Nullable
public String getFileName()
        Returns the name of the source file containing the execution point represented by this stack trace element. Generally, this corresponds to the SourceFile attribute of the relevant class file (as per The Java Virtual Machine Specification, Section 4.7.7). In some systems, the name may refer to some source code unit other than a file, such as an entry in source repository.
        Returns:
        the name of the file containing the execution point represented by this stack trace element, or null if this information is unavailable.

      • getLineNumber

        public int getLineNumber()
        Returns the line number of the source line containing the execution point represented by this stack trace element. Generally, this is derived from the LineNumberTable attribute of the relevant class file (as per The Java Virtual Machine Specification, Section 4.7.8).
        Returns:
        the line number of the source line containing the execution point represented by this stack trace element, or a negative number if this information is unavailable.

      • getMethodName

        public String getMethodName()
        Returns the name of the method containing the execution point represented by this stack trace element. If the execution point is contained in an instance or class initializer, this method will return the appropriate special method name, <init> or <clinit>, as per Section 3.9 of The Java Virtual Machine Specification.
        Returns:
        the name of the method containing the execution point represented by this stack trace element.

      • toString

        public String toString()
        Returns a string representation of this stack trace element. The format of this string depends on the implementation.
        Overrides:
        toString in class Object
        Returns:
        a string representation of the object.