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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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.
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 * 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
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 * accompanied this code).
 *
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 *
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package jdk.jfr;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

Event field annotation, specifies that the value is a point in time.
Since:
9/**
 * Event field annotation, specifies that the value is a point in time.
 *
 * @since 9
 */
@MetadataDefinition
@ContentType
@Label("Timestamp")
@Description("A point in time")
@Retention(RetentionPolicy.RUNTIME)
@Target({ ElementType.FIELD, ElementType.TYPE, ElementType.METHOD})
public @interface Timestamp {
    
The unit for the difference, measured in milliseconds, between the current
time and midnight, January 1, 1970 UTC.
/**
     * The unit for the difference, measured in milliseconds, between the current
     * time and midnight, January 1, 1970 UTC.
     */
    public final static String MILLISECONDS_SINCE_EPOCH = "MILLISECONDS_SINCE_EPOCH";

    
The unit for the number of ticks that have transpired since some arbitrary
starting date.
/**
     * The unit for the number of ticks that have transpired since some arbitrary
     * starting date.
     */
    public final static String TICKS = "TICKS";

    
Unit for the time stamp.
Returns:
time stamp unit, not null/**
     * Unit for the time stamp.
     *
     * @return time stamp unit, not {@code null}
     */
    String value() default Timestamp.MILLISECONDS_SINCE_EPOCH;
}