Class: java.lang.StackTraceElement

  • public final class StackTraceElement
  • implements Serializable
An element in a stack trace, as returned by Throwable.getStackTrace(). 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.
Authors:
@author Josh Bloch
Since:
@since 1.4

Inheritance

Superclass tree: Implements:

Methods

  • StackTraceElementtop

    public StackTraceElement(String declaringClass, String methodName, String fileName, int lineNumber)
    Creates a stack trace element representing the specified execution point.
    Parameters:
    @param declaringClass the fully qualified name of the class containing the execution point represented by the stack trace element
    @param methodName the name of the method containing the execution point represented by the stack trace element
    @param fileName the name of the file containing the execution point represented by the stack trace element, or null if this information is unavailable
    @param lineNumber 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. A value of -2 indicates that the method containing the execution point is a native method
    Exceptions:
    @throws NullPointerException if declaringClass or methodName is null
    Since:
    @since 1.5
    Related Links:
    Google Code Search
    Stack Overflow

  • eqtop

    static private boolean eq(Object a, Object b)
    Related Links:
    Google Code Search
    Stack Overflow

  • equalstop

    public boolean equals(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())
    where equals is defined as: 
         static boolean equals(Object a, Object b) {
         return a==b || (a != null && a.equals(b));
     }
    Parameters:
    @param obj the object to be compared with this stack trace element.
    Return:
    @return true if the specified object is another StackTraceElement instance representing the same execution point as this instance.
    Override hierarchy:
    equals from Object
    Related Links:
    Google Code Search
    Stack Overflow

  • getClassNametop

    public String getClassName()
    Returns the fully qualified name of the class containing the execution point represented by this stack trace element.
    Return:
    @return the fully qualified name of the Class containing the execution point represented by this stack trace element.
    Related Links:
    Google Code Search
    Stack Overflow

  • getFileNametop

    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.
    Return:
    @return the name of the file containing the execution point represented by this stack trace element, or null if this information is unavailable.
    Related Links:
    Google Code Search
    Stack Overflow

  • getLineNumbertop

    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).
    Return:
    @return 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.
    Related Links:
    Google Code Search
    Stack Overflow

  • getMethodNametop

    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.
    Return:
    @return the name of the method containing the execution point represented by this stack trace element.
    Related Links:
    Google Code Search
    Stack Overflow

  • hashCodetop

    public int hashCode()
    Returns a hash code value for this stack trace element.
    Return:
    @return a hash code value for this object.
    Override hierarchy:
    hashCode from Object
    Related Links:
    Google Code Search
    Stack Overflow

  • isNativeMethodtop

    public boolean isNativeMethod()
    Returns true if the method containing the execution point represented by this stack trace element is a native method.
    Return:
    @return true if the method containing the execution point represented by this stack trace element is a native method.
    Related Links:
    Google Code Search
    Stack Overflow

  • toStringtop

    public String toString()
    Returns a string representation of this stack trace element. The format of this string depends on the implementation, but the following examples may be regarded as typical:
    • "MyClass.mash(MyClass.java:9)" - Here, "MyClass" is the fully-qualified name of the class containing the execution point represented by this stack trace element, "mash" is the name of the method containing the execution point, "MyClass.java" is the source file containing the execution point, and "9" is the line number of the source line containing the execution point.
    • "MyClass.mash(MyClass.java)" - As above, but the line number is unavailable.
    • "MyClass.mash(Unknown Source)" - As above, but neither the file name nor the line number are available.
    • "MyClass.mash(Native Method)" - As above, but neither the file name nor the line number are available, and the method containing the execution point is known to be a native method.
    Return:
    @return a string representation of the object.
    See:
    @see Throwable.printStackTrace()
    Override hierarchy:
    toString from Object
    Related Links:
    Google Code Search
    Stack Overflow

Fields

  • declaringClass

    private String declaringClass

  • fileName

    private String fileName

  • lineNumber

    private int lineNumber

  • methodName

    private String methodName

  • serialVersionUID

    static final private long serialVersionUID = 6992337162326171013