1 /* 2 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr; 27 28 import java.lang.annotation.ElementType; 29 import java.lang.annotation.Retention; 30 import java.lang.annotation.RetentionPolicy; 31 import java.lang.annotation.Target; 32 33 /** 34 * Event field annotation to use on fractions, typically between {@code 0.0} 35 * and {@code 1.0}, to specify that the value is a percentage. 36 * <p> 37 * For example, a field with the value {@code 0.5} annotated by this annotation, 38 * should be interpreted as {@code 50%} and rendered in a graphical user 39 * interface with a percentage sign to avoid confusion with {@code 0.005%}. 40 * 41 * @since 9 42 */ 43 @MetadataDefinition 44 @ContentType 45 @Label("Percentage") 46 @Description("Percentage, represented as a number between 0 and 1") 47 @Retention(RetentionPolicy.RUNTIME) 48 @Target({ ElementType.FIELD, ElementType.TYPE, ElementType.METHOD}) 49 public @interface Percentage { 50 } 51