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package java.lang;
Thrown to indicate that an assertion has failed.
The seven one-argument public constructors provided by this
class ensure that the assertion error returned by the invocation:
new AssertionError(expression)
has as its detail message the string conversion of
expression (as defined in
The Java Language Specification, Second Edition,
Section 15.18.1.1), regardless of the type of expression.
Since: 1.4
/**
* Thrown to indicate that an assertion has failed.
*
* <p>The seven one-argument public constructors provided by this
* class ensure that the assertion error returned by the invocation:
* <pre>
* new AssertionError(<i>expression</i>)
* </pre>
* has as its detail message the <i>string conversion</i> of
* <i>expression</i> (as defined in <a
* href="http://java.sun.com/docs/books/jls/second_edition/html/j.title.doc.html">
* <i>The Java Language Specification, Second Edition</i></a>,
* <a href="http://java.sun.com/docs/books/jls/second_edition/html/expressions.doc.html#40220">
* Section 15.18.1.1</a>), regardless of the type of <i>expression</i>.
*
* @since 1.4
*/
public class AssertionError extends Error {
Constructs an AssertionError with no detail message.
/**
* Constructs an AssertionError with no detail message.
*/
public AssertionError() {
}
This internal constructor does no processing on its string argument,
even if it is a null reference. The public constructors will
never call this constructor with a null argument.
/**
* This internal constructor does no processing on its string argument,
* even if it is a null reference. The public constructors will
* never call this constructor with a null argument.
*/
private AssertionError(String detailMessage) {
super(detailMessage);
}
Constructs an AssertionError with its detail message derived
from the specified object, which is converted to a string as
defined in The Java Language Specification, Second
Edition, Section 15.18.1.1.
If the specified object is an instance of Throwable, it
becomes the cause of the newly constructed assertion error.
Params: - detailMessage – value to be used in constructing detail message
See Also:
/**
* Constructs an AssertionError with its detail message derived
* from the specified object, which is converted to a string as
* defined in <i>The Java Language Specification, Second
* Edition</i>, Section 15.18.1.1.
*<p>
* If the specified object is an instance of <tt>Throwable</tt>, it
* becomes the <i>cause</i> of the newly constructed assertion error.
*
* @param detailMessage value to be used in constructing detail message
* @see Throwable#getCause()
*/
public AssertionError(Object detailMessage) {
this("" + detailMessage);
if (detailMessage instanceof Throwable)
initCause((Throwable) detailMessage);
}
Constructs an AssertionError with its detail message derived
from the specified boolean, which is converted to
a string as defined in The Java Language Specification,
Second Edition, Section 15.18.1.1.
Params: - detailMessage – value to be used in constructing detail message
/**
* Constructs an AssertionError with its detail message derived
* from the specified <code>boolean</code>, which is converted to
* a string as defined in <i>The Java Language Specification,
* Second Edition</i>, Section 15.18.1.1.
*
* @param detailMessage value to be used in constructing detail message
*/
public AssertionError(boolean detailMessage) {
this("" + detailMessage);
}
Constructs an AssertionError with its detail message derived
from the specified char, which is converted to a
string as defined in The Java Language Specification, Second
Edition, Section 15.18.1.1.
Params: - detailMessage – value to be used in constructing detail message
/**
* Constructs an AssertionError with its detail message derived
* from the specified <code>char</code>, which is converted to a
* string as defined in <i>The Java Language Specification, Second
* Edition</i>, Section 15.18.1.1.
*
* @param detailMessage value to be used in constructing detail message
*/
public AssertionError(char detailMessage) {
this("" + detailMessage);
}
Constructs an AssertionError with its detail message derived
from the specified int, which is converted to a
string as defined in The Java Language Specification, Second
Edition, Section 15.18.1.1.
Params: - detailMessage – value to be used in constructing detail message
/**
* Constructs an AssertionError with its detail message derived
* from the specified <code>int</code>, which is converted to a
* string as defined in <i>The Java Language Specification, Second
* Edition</i>, Section 15.18.1.1.
*
* @param detailMessage value to be used in constructing detail message
*/
public AssertionError(int detailMessage) {
this("" + detailMessage);
}
Constructs an AssertionError with its detail message derived
from the specified long, which is converted to a
string as defined in The Java Language Specification, Second
Edition, Section 15.18.1.1.
Params: - detailMessage – value to be used in constructing detail message
/**
* Constructs an AssertionError with its detail message derived
* from the specified <code>long</code>, which is converted to a
* string as defined in <i>The Java Language Specification, Second
* Edition</i>, Section 15.18.1.1.
*
* @param detailMessage value to be used in constructing detail message
*/
public AssertionError(long detailMessage) {
this("" + detailMessage);
}
Constructs an AssertionError with its detail message derived
from the specified float, which is converted to a
string as defined in The Java Language Specification, Second
Edition, Section 15.18.1.1.
Params: - detailMessage – value to be used in constructing detail message
/**
* Constructs an AssertionError with its detail message derived
* from the specified <code>float</code>, which is converted to a
* string as defined in <i>The Java Language Specification, Second
* Edition</i>, Section 15.18.1.1.
*
* @param detailMessage value to be used in constructing detail message
*/
public AssertionError(float detailMessage) {
this("" + detailMessage);
}
Constructs an AssertionError with its detail message derived
from the specified double, which is converted to a
string as defined in The Java Language Specification, Second
Edition, Section 15.18.1.1.
Params: - detailMessage – value to be used in constructing detail message
/**
* Constructs an AssertionError with its detail message derived
* from the specified <code>double</code>, which is converted to a
* string as defined in <i>The Java Language Specification, Second
* Edition</i>, Section 15.18.1.1.
*
* @param detailMessage value to be used in constructing detail message
*/
public AssertionError(double detailMessage) {
this("" + detailMessage);
}
}