current/sdk/sdk_library/public/art.module.public.api_stub_sources/java/lang/Throwable.java

/*
 * Copyright (C) 2014 The Android Open Source Project
 * Copyright (c) 1994, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */


package java.lang;

import java.io.*;
import java.util.*;

/**
 * The {@code Throwable} class is the superclass of all errors and
 * exceptions in the Java language. Only objects that are instances of this
 * class (or one of its subclasses) are thrown by the Java Virtual Machine or
 * can be thrown by the Java {@code throw} statement. Similarly, only
 * this class or one of its subclasses can be the argument type in a
 * {@code catch} clause.
 *
 * For the purposes of compile-time checking of exceptions, {@code
 * Throwable} and any subclass of {@code Throwable} that is not also a
 * subclass of either {@link java.lang.RuntimeException RuntimeException} or {@link java.lang.Error Error} are
 * regarded as checked exceptions.
 *
 * <p>Instances of two subclasses, {@link java.lang.Error} and
 * {@link java.lang.Exception}, are conventionally used to indicate
 * that exceptional situations have occurred. Typically, these instances
 * are freshly created in the context of the exceptional situation so
 * as to include relevant information (such as stack trace data).
 *
 * <p>A throwable contains a snapshot of the execution stack of its
 * thread at the time it was created. It can also contain a message
 * string that gives more information about the error. Over time, a
 * throwable can {@linkplain java.lang.Throwable#addSuppressed Throwable#addSuppressed} other
 * throwables from being propagated.  Finally, the throwable can also
 * contain a <i>cause</i>: another throwable that caused this
 * throwable to be constructed.  The recording of this causal information
 * is referred to as the <i>chained exception</i> facility, as the
 * cause can, itself, have a cause, and so on, leading to a "chain" of
 * exceptions, each caused by another.
 *
 * <p>One reason that a throwable may have a cause is that the class that
 * throws it is built atop a lower layered abstraction, and an operation on
 * the upper layer fails due to a failure in the lower layer.  It would be bad
 * design to let the throwable thrown by the lower layer propagate outward, as
 * it is generally unrelated to the abstraction provided by the upper layer.
 * Further, doing so would tie the API of the upper layer to the details of
 * its implementation, assuming the lower layer's exception was a checked
 * exception.  Throwing a "wrapped exception" (i.e., an exception containing a
 * cause) allows the upper layer to communicate the details of the failure to
 * its caller without incurring either of these shortcomings.  It preserves
 * the flexibility to change the implementation of the upper layer without
 * changing its API (in particular, the set of exceptions thrown by its
 * methods).
 *
 * <p>A second reason that a throwable may have a cause is that the method
 * that throws it must conform to a general-purpose interface that does not
 * permit the method to throw the cause directly.  For example, suppose
 * a persistent collection conforms to the {@link java.util.Collection
 * Collection} interface, and that its persistence is implemented atop
 * {@code java.io}.  Suppose the internals of the {@code add} method
 * can throw an {@link java.io.IOException IOException}.  The implementation
 * can communicate the details of the {@code IOException} to its caller
 * while conforming to the {@code Collection} interface by wrapping the
 * {@code IOException} in an appropriate unchecked exception.  (The
 * specification for the persistent collection should indicate that it is
 * capable of throwing such exceptions.)
 *
 * <p>A cause can be associated with a throwable in two ways: via a
 * constructor that takes the cause as an argument, or via the
 * {@link #initCause(java.lang.Throwable)} method.  New throwable classes that
 * wish to allow causes to be associated with them should provide constructors
 * that take a cause and delegate (perhaps indirectly) to one of the
 * {@code Throwable} constructors that takes a cause.
 *
 * Because the {@code initCause} method is public, it allows a cause to be
 * associated with any throwable, even a "legacy throwable" whose
 * implementation predates the addition of the exception chaining mechanism to
 * {@code Throwable}.
 *
 * <p>By convention, class {@code Throwable} and its subclasses have two
 * constructors, one that takes no arguments and one that takes a
 * {@code String} argument that can be used to produce a detail message.
 * Further, those subclasses that might likely have a cause associated with
 * them should have two more constructors, one that takes a
 * {@code Throwable} (the cause), and one that takes a
 * {@code String} (the detail message) and a {@code Throwable} (the
 * cause).
 *
 * @author  unascribed
 * @author  Josh Bloch (Added exception chaining and programmatic access to
 *          stack trace in 1.4.)
 * @jls 11.2 Compile-Time Checking of Exceptions
 * @since JDK1.0
 */

@SuppressWarnings({"unchecked", "deprecation", "all"})
public class Throwable implements java.io.Serializable {

/**
 * Constructs a new throwable with {@code null} as its detail message.
 * The cause is not initialized, and may subsequently be initialized by a
 * call to {@link #initCause}.
 *
 * <p>The {@link #fillInStackTrace()} method is called to initialize
 * the stack trace data in the newly created throwable.
 */

public Throwable() { throw new RuntimeException("Stub!"); }

/**
 * Constructs a new throwable with the specified detail message.  The
 * cause is not initialized, and may subsequently be initialized by
 * a call to {@link #initCause}.
 *
 * <p>The {@link #fillInStackTrace()} method is called to initialize
 * the stack trace data in the newly created throwable.
 *
 * @param   message   the detail message. The detail message is saved for
 *          later retrieval by the {@link #getMessage()} method.
 */

public Throwable(@android.annotation.Nullable java.lang.String message) { throw new RuntimeException("Stub!"); }

/**
 * Constructs a new throwable with the specified detail message and
 * cause.  <p>Note that the detail message associated with
 * {@code cause} is <i>not</i> automatically incorporated in
 * this throwable's detail message.
 *
 * <p>The {@link #fillInStackTrace()} method is called to initialize
 * the stack trace data in the newly created throwable.
 *
 * @param  message the detail message (which is saved for later retrieval
 *         by the {@link #getMessage()} method).
 * @param  cause the cause (which is saved for later retrieval by the
 *         {@link #getCause()} method).  (A {@code null} value is
 *         permitted, and indicates that the cause is nonexistent or
 *         unknown.)
 * @since  1.4
 */

public Throwable(@android.annotation.Nullable java.lang.String message, @android.annotation.Nullable java.lang.Throwable cause) { throw new RuntimeException("Stub!"); }

/**
 * Constructs a new throwable with the specified cause and a detail
 * message of {@code (cause==null ? null : cause.toString())} (which
 * typically contains the class and detail message of {@code cause}).
 * This constructor is useful for throwables that are little more than
 * wrappers for other throwables (for example, {@link
 * java.security.PrivilegedActionException}).
 *
 * <p>The {@link #fillInStackTrace()} method is called to initialize
 * the stack trace data in the newly created throwable.
 *
 * @param  cause the cause (which is saved for later retrieval by the
 *         {@link #getCause()} method).  (A {@code null} value is
 *         permitted, and indicates that the cause is nonexistent or
 *         unknown.)
 * @since  1.4
 */

public Throwable(@android.annotation.Nullable java.lang.Throwable cause) { throw new RuntimeException("Stub!"); }

/**
 * Constructs a new throwable with the specified detail message,
 * cause, {@linkplain #addSuppressed suppression} enabled or
 * disabled, and writable stack trace enabled or disabled.  If
 * suppression is disabled, {@link #getSuppressed} for this object
 * will return a zero-length array and calls to {@link
 * #addSuppressed} that would otherwise append an exception to the
 * suppressed list will have no effect.  If the writable stack
 * trace is false, this constructor will not call {@link
 * #fillInStackTrace()}, a {@code null} will be written to the
 * {@code stackTrace} field, and subsequent calls to {@code
 * fillInStackTrace} and {@link
 * #setStackTrace(java.lang.StackTraceElement[])} will not set the stack
 * trace.  If the writable stack trace is false, {@link
 * #getStackTrace} will return a zero length array.
 *
 * <p>Note that the other constructors of {@code Throwable} treat
 * suppression as being enabled and the stack trace as being
 * writable.  Subclasses of {@code Throwable} should document any
 * conditions under which suppression is disabled and document
 * conditions under which the stack trace is not writable.
 * Disabling of suppression should only occur in exceptional
 * circumstances where special requirements exist, such as a
 * virtual machine reusing exception objects under low-memory
 * situations.  Circumstances where a given exception object is
 * repeatedly caught and rethrown, such as to implement control
 * flow between two sub-systems, is another situation where
 * immutable throwable objects would be appropriate.
 *
 * @param  message the detail message.
 * @param cause the cause.  (A {@code null} value is permitted,
 * and indicates that the cause is nonexistent or unknown.)
 * @param enableSuppression whether or not suppression is enabled or disabled
 * @param writableStackTrace whether or not the stack trace should be
 *                           writable
 *
 * @see java.lang.OutOfMemoryError
 * @see java.lang.NullPointerException
 * @see java.lang.ArithmeticException
 * @since 1.7
 */

protected Throwable(@android.annotation.Nullable java.lang.String message, @android.annotation.Nullable java.lang.Throwable cause, boolean enableSuppression, boolean writableStackTrace) { throw new RuntimeException("Stub!"); }

/**
 * Returns the detail message string of this throwable.
 *
 * @return  the detail message string of this {@code Throwable} instance
 *          (which may be {@code null}).
 */

@android.annotation.Nullable
public java.lang.String getMessage() { throw new RuntimeException("Stub!"); }

/**
 * Creates a localized description of this throwable.
 * Subclasses may override this method in order to produce a
 * locale-specific message.  For subclasses that do not override this
 * method, the default implementation returns the same result as
 * {@code getMessage()}.
 *
 * @return  The localized description of this throwable.
 * @since   JDK1.1
 */

@android.annotation.Nullable
public java.lang.String getLocalizedMessage() { throw new RuntimeException("Stub!"); }

/**
 * Returns the cause of this throwable or {@code null} if the
 * cause is nonexistent or unknown.  (The cause is the throwable that
 * caused this throwable to get thrown.)
 *
 * <p>This implementation returns the cause that was supplied via one of
 * the constructors requiring a {@code Throwable}, or that was set after
 * creation with the {@link #initCause(java.lang.Throwable)} method.  While it is
 * typically unnecessary to override this method, a subclass can override
 * it to return a cause set by some other means.  This is appropriate for
 * a "legacy chained throwable" that predates the addition of chained
 * exceptions to {@code Throwable}.  Note that it is <i>not</i>
 * necessary to override any of the {@code PrintStackTrace} methods,
 * all of which invoke the {@code getCause} method to determine the
 * cause of a throwable.
 *
 * @return  the cause of this throwable or {@code null} if the
 *          cause is nonexistent or unknown.
 * @since 1.4
 */

@android.annotation.Nullable
public synchronized java.lang.Throwable getCause() { throw new RuntimeException("Stub!"); }

/**
 * Initializes the <i>cause</i> of this throwable to the specified value.
 * (The cause is the throwable that caused this throwable to get thrown.)
 *
 * <p>This method can be called at most once.  It is generally called from
 * within the constructor, or immediately after creating the
 * throwable.  If this throwable was created
 * with {@link #Throwable(java.lang.Throwable)} or
 * {@link #Throwable(java.lang.String,java.lang.Throwable)}, this method cannot be called
 * even once.
 *
 * <p>An example of using this method on a legacy throwable type
 * without other support for setting the cause is:
 *
 * <pre>
 * try {
 *     lowLevelOp();
 * } catch (LowLevelException le) {
 *     throw (HighLevelException)
 *           new HighLevelException().initCause(le); // Legacy constructor
 * }
 * </pre>
 *
 * @param  cause the cause (which is saved for later retrieval by the
 *         {@link #getCause()} method).  (A {@code null} value is
 *         permitted, and indicates that the cause is nonexistent or
 *         unknown.)
 * @return  a reference to this {@code Throwable} instance.
 * @throws java.lang.IllegalArgumentException if {@code cause} is this
 *         throwable.  (A throwable cannot be its own cause.)
 * @throws java.lang.IllegalStateException if this throwable was
 *         created with {@link #Throwable(java.lang.Throwable)} or
 *         {@link #Throwable(java.lang.String,java.lang.Throwable)}, or this method has already
 *         been called on this throwable.
 * @since  1.4
 */

@android.annotation.NonNull
public synchronized java.lang.Throwable initCause(@android.annotation.Nullable java.lang.Throwable cause) { throw new RuntimeException("Stub!"); }

/**
 * Returns a short description of this throwable.
 * The result is the concatenation of:
 * <ul>
 * <li> the {@linkplain java.lang.Class#getName() Class#getName()} of the class of this object
 * <li> ": " (a colon and a space)
 * <li> the result of invoking this object's {@link #getLocalizedMessage}
 *      method
 * </ul>
 * If {@code getLocalizedMessage} returns {@code null}, then just
 * the class name is returned.
 *
 * @return a string representation of this throwable.
 */

@android.annotation.NonNull
public java.lang.String toString() { throw new RuntimeException("Stub!"); }

/**
 * Prints this throwable and its backtrace to the
 * standard error stream. This method prints a stack trace for this
 * {@code Throwable} object on the error output stream that is
 * the value of the field {@code System.err}. The first line of
 * output contains the result of the {@link #toString()} method for
 * this object.  Remaining lines represent data previously recorded by
 * the method {@link #fillInStackTrace()}. The format of this
 * information depends on the implementation, but the following
 * example may be regarded as typical:
 * <blockquote><pre>
 * java.lang.NullPointerException
 *         at MyClass.mash(MyClass.java:9)
 *         at MyClass.crunch(MyClass.java:6)
 *         at MyClass.main(MyClass.java:3)
 * </pre></blockquote>
 * This example was produced by running the program:
 * <pre>
 * class MyClass {
 *     public static void main(String[] args) {
 *         crunch(null);
 *     }
 *     static void crunch(int[] a) {
 *         mash(a);
 *     }
 *     static void mash(int[] b) {
 *         System.out.println(b[0]);
 *     }
 * }
 * </pre>
 * The backtrace for a throwable with an initialized, non-null cause
 * should generally include the backtrace for the cause.  The format
 * of this information depends on the implementation, but the following
 * example may be regarded as typical:
 * <pre>
 * HighLevelException: MidLevelException: LowLevelException
 *         at Junk.a(Junk.java:13)
 *         at Junk.main(Junk.java:4)
 * Caused by: MidLevelException: LowLevelException
 *         at Junk.c(Junk.java:23)
 *         at Junk.b(Junk.java:17)
 *         at Junk.a(Junk.java:11)
 *         ... 1 more
 * Caused by: LowLevelException
 *         at Junk.e(Junk.java:30)
 *         at Junk.d(Junk.java:27)
 *         at Junk.c(Junk.java:21)
 *         ... 3 more
 * </pre>
 * Note the presence of lines containing the characters {@code "..."}.
 * These lines indicate that the remainder of the stack trace for this
 * exception matches the indicated number of frames from the bottom of the
 * stack trace of the exception that was caused by this exception (the
 * "enclosing" exception).  This shorthand can greatly reduce the length
 * of the output in the common case where a wrapped exception is thrown
 * from same method as the "causative exception" is caught.  The above
 * example was produced by running the program:
 * <pre>
 * public class Junk {
 *     public static void main(String args[]) {
 *         try {
 *             a();
 *         } catch(HighLevelException e) {
 *             e.printStackTrace();
 *         }
 *     }
 *     static void a() throws HighLevelException {
 *         try {
 *             b();
 *         } catch(MidLevelException e) {
 *             throw new HighLevelException(e);
 *         }
 *     }
 *     static void b() throws MidLevelException {
 *         c();
 *     }
 *     static void c() throws MidLevelException {
 *         try {
 *             d();
 *         } catch(LowLevelException e) {
 *             throw new MidLevelException(e);
 *         }
 *     }
 *     static void d() throws LowLevelException {
 *        e();
 *     }
 *     static void e() throws LowLevelException {
 *         throw new LowLevelException();
 *     }
 * }
 *
 * class HighLevelException extends Exception {
 *     HighLevelException(Throwable cause) { super(cause); }
 * }
 *
 * class MidLevelException extends Exception {
 *     MidLevelException(Throwable cause)  { super(cause); }
 * }
 *
 * class LowLevelException extends Exception {
 * }
 * </pre>
 * As of release 7, the platform supports the notion of
 * <i>suppressed exceptions</i> (in conjunction with the {@code
 * try}-with-resources statement). Any exceptions that were
 * suppressed in order to deliver an exception are printed out
 * beneath the stack trace.  The format of this information
 * depends on the implementation, but the following example may be
 * regarded as typical:
 *
 * <pre>
 * Exception in thread "main" java.lang.Exception: Something happened
 *  at Foo.bar(Foo.java:10)
 *  at Foo.main(Foo.java:5)
 *  Suppressed: Resource$CloseFailException: Resource ID = 0
 *          at Resource.close(Resource.java:26)
 *          at Foo.bar(Foo.java:9)
 *          ... 1 more
 * </pre>
 * Note that the "... n more" notation is used on suppressed exceptions
 * just at it is used on causes. Unlike causes, suppressed exceptions are
 * indented beyond their "containing exceptions."
 *
 * <p>An exception can have both a cause and one or more suppressed
 * exceptions:
 * <pre>
 * Exception in thread "main" java.lang.Exception: Main block
 *  at Foo3.main(Foo3.java:7)
 *  Suppressed: Resource$CloseFailException: Resource ID = 2
 *          at Resource.close(Resource.java:26)
 *          at Foo3.main(Foo3.java:5)
 *  Suppressed: Resource$CloseFailException: Resource ID = 1
 *          at Resource.close(Resource.java:26)
 *          at Foo3.main(Foo3.java:5)
 * Caused by: java.lang.Exception: I did it
 *  at Foo3.main(Foo3.java:8)
 * </pre>
 * Likewise, a suppressed exception can have a cause:
 * <pre>
 * Exception in thread "main" java.lang.Exception: Main block
 *  at Foo4.main(Foo4.java:6)
 *  Suppressed: Resource2$CloseFailException: Resource ID = 1
 *          at Resource2.close(Resource2.java:20)
 *          at Foo4.main(Foo4.java:5)
 *  Caused by: java.lang.Exception: Rats, you caught me
 *          at Resource2$CloseFailException.&lt;init&gt;(Resource2.java:45)
 *          ... 2 more
 * </pre>
 */

public void printStackTrace() { throw new RuntimeException("Stub!"); }

/**
 * Prints this throwable and its backtrace to the specified print stream.
 *
 * @param s {@code PrintStream} to use for output
 */

public void printStackTrace(@android.annotation.NonNull java.io.PrintStream s) { throw new RuntimeException("Stub!"); }

/**
 * Prints this throwable and its backtrace to the specified
 * print writer.
 *
 * @param s {@code PrintWriter} to use for output
 * @since   JDK1.1
 */

public void printStackTrace(@android.annotation.NonNull java.io.PrintWriter s) { throw new RuntimeException("Stub!"); }

/**
 * Fills in the execution stack trace. This method records within this
 * {@code Throwable} object information about the current state of
 * the stack frames for the current thread.
 *
 * <p>If the stack trace of this {@code Throwable} {@linkplain java.lang.Throwable#Throwable(java.lang.String,java.lang.Throwable,boolean,boolean) Throwable#Throwable(String, Throwable, boolean, boolean)}, calling this method has no effect.
 *
 * @return  a reference to this {@code Throwable} instance.
 * @see     java.lang.Throwable#printStackTrace()
 */

@android.annotation.NonNull
public synchronized java.lang.Throwable fillInStackTrace() { throw new RuntimeException("Stub!"); }

/**
 * Provides programmatic access to the stack trace information printed by
 * {@link #printStackTrace()}.  Returns an array of stack trace elements,
 * each representing one stack frame.  The zeroth element of the array
 * (assuming the array's length is non-zero) represents the top of the
 * stack, which is the last method invocation in the sequence.  Typically,
 * this is the point at which this throwable was created and thrown.
 * The last element of the array (assuming the array's length is non-zero)
 * represents the bottom of the stack, which is the first method invocation
 * in the sequence.
 *
 * <p>Some virtual machines may, under some circumstances, omit one
 * or more stack frames from the stack trace.  In the extreme case,
 * a virtual machine that has no stack trace information concerning
 * this throwable is permitted to return a zero-length array from this
 * method.  Generally speaking, the array returned by this method will
 * contain one element for every frame that would be printed by
 * {@code printStackTrace}.  Writes to the returned array do not
 * affect future calls to this method.
 *
 * @return an array of stack trace elements representing the stack trace
 *         pertaining to this throwable.
 * @since  1.4
 */

@android.annotation.NonNull
public java.lang.StackTraceElement[] getStackTrace() { throw new RuntimeException("Stub!"); }

/**
 * Sets the stack trace elements that will be returned by
 * {@link #getStackTrace()} and printed by {@link #printStackTrace()}
 * and related methods.
 *
 * This method, which is designed for use by RPC frameworks and other
 * advanced systems, allows the client to override the default
 * stack trace that is either generated by {@link #fillInStackTrace()}
 * when a throwable is constructed or deserialized when a throwable is
 * read from a serialization stream.
 *
 * <p>If the stack trace of this {@code Throwable} {@linkplain java.lang.Throwable#Throwable(java.lang.String,java.lang.Throwable,boolean,boolean) Throwable#Throwable(String, Throwable, boolean, boolean)}, calling this method has no effect other than
 * validating its argument.
 *
 * @param   stackTrace the stack trace elements to be associated with
 * this {@code Throwable}.  The specified array is copied by this
 * call; changes in the specified array after the method invocation
 * returns will have no affect on this {@code Throwable}'s stack
 * trace.
 *
 * @throws java.lang.NullPointerException if {@code stackTrace} is
 *         {@code null} or if any of the elements of
 *         {@code stackTrace} are {@code null}
 *
 * @since  1.4
 */

public void setStackTrace(@android.annotation.NonNull java.lang.StackTraceElement[] stackTrace) { throw new RuntimeException("Stub!"); }

/**
 * Appends the specified exception to the exceptions that were
 * suppressed in order to deliver this exception. This method is
 * thread-safe and typically called (automatically and implicitly)
 * by the {@code try}-with-resources statement.
 *
 * <p>The suppression behavior is enabled <em>unless</em> disabled
 * {@linkplain #Throwable(java.lang.String,java.lang.Throwable,boolean,boolean) via
 * a constructor}.  When suppression is disabled, this method does
 * nothing other than to validate its argument.
 *
 * <p>Note that when one exception {@linkplain
 * #initCause(java.lang.Throwable) causes} another exception, the first
 * exception is usually caught and then the second exception is
 * thrown in response.  In other words, there is a causal
 * connection between the two exceptions.
 *
 * In contrast, there are situations where two independent
 * exceptions can be thrown in sibling code blocks, in particular
 * in the {@code try} block of a {@code try}-with-resources
 * statement and the compiler-generated {@code finally} block
 * which closes the resource.
 *
 * In these situations, only one of the thrown exceptions can be
 * propagated.  In the {@code try}-with-resources statement, when
 * there are two such exceptions, the exception originating from
 * the {@code try} block is propagated and the exception from the
 * {@code finally} block is added to the list of exceptions
 * suppressed by the exception from the {@code try} block.  As an
 * exception unwinds the stack, it can accumulate multiple
 * suppressed exceptions.
 *
 * <p>An exception may have suppressed exceptions while also being
 * caused by another exception.  Whether or not an exception has a
 * cause is semantically known at the time of its creation, unlike
 * whether or not an exception will suppress other exceptions
 * which is typically only determined after an exception is
 * thrown.
 *
 * <p>Note that programmer written code is also able to take
 * advantage of calling this method in situations where there are
 * multiple sibling exceptions and only one can be propagated.
 *
 * @param exception the exception to be added to the list of
 *        suppressed exceptions
 * @throws java.lang.IllegalArgumentException if {@code exception} is this
 *         throwable; a throwable cannot suppress itself.
 * @throws java.lang.NullPointerException if {@code exception} is {@code null}
 * @since 1.7
 */

public final synchronized void addSuppressed(@android.annotation.NonNull java.lang.Throwable exception) { throw new RuntimeException("Stub!"); }

/**
 * Returns an array containing all of the exceptions that were
 * suppressed, typically by the {@code try}-with-resources
 * statement, in order to deliver this exception.
 *
 * If no exceptions were suppressed or {@linkplain
 * #Throwable(java.lang.String,java.lang.Throwable,boolean,boolean) suppression is
 * disabled}, an empty array is returned.  This method is
 * thread-safe.  Writes to the returned array do not affect future
 * calls to this method.
 *
 * @return an array containing all of the exceptions that were
 *         suppressed to deliver this exception.
 * @since 1.7
 */

@android.annotation.NonNull
public final synchronized java.lang.Throwable[] getSuppressed() { throw new RuntimeException("Stub!"); }
}