| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package java.lang.reflect; |
| |
| /** |
| * This class provides static methods to decode class and member modifiers. |
| * |
| * @see Class#getModifiers() |
| * @see Member#getModifiers() |
| */ |
| public class Modifier { |
| |
| /** |
| * The {@code int} value representing the {@code public} |
| * modifier. |
| */ |
| public static final int PUBLIC = 0x1; |
| |
| /** |
| * The {@code int} value representing the {@code private} |
| * modifier. |
| */ |
| public static final int PRIVATE = 0x2; |
| |
| /** |
| * The {@code int} value representing the {@code protected} |
| * modifier. |
| */ |
| public static final int PROTECTED = 0x4; |
| |
| /** |
| * The {@code int} value representing the {@code static} modifier. |
| */ |
| public static final int STATIC = 0x8; |
| |
| /** |
| * The {@code int} value representing the {@code final} modifier. |
| */ |
| public static final int FINAL = 0x10; |
| |
| /** |
| * The {@code int} value representing the {@code synchronized} |
| * modifier. |
| */ |
| public static final int SYNCHRONIZED = 0x20; |
| |
| /** |
| * The {@code int} value representing the {@code volatile} |
| * modifier. |
| */ |
| public static final int VOLATILE = 0x40; |
| |
| /** |
| * The {@code int} value representing the {@code transient} |
| * modifier. |
| */ |
| public static final int TRANSIENT = 0x80; |
| |
| /** |
| * The {@code int} value representing the {@code native} modifier. |
| */ |
| public static final int NATIVE = 0x100; |
| |
| /** |
| * The {@code int} value representing the {@code interface} |
| * modifier. |
| */ |
| public static final int INTERFACE = 0x200; |
| |
| /** |
| * The {@code int} value representing the {@code abstract} |
| * modifier. |
| */ |
| public static final int ABSTRACT = 0x400; |
| |
| /** |
| * The {@code int} value representing the {@code strict} modifier. |
| */ |
| public static final int STRICT = 0x800; |
| |
| // Non-public types required by Java 5 update to class file format |
| static final int BRIDGE = 0x40; |
| |
| static final int VARARGS = 0x80; |
| |
| static final int SYNTHETIC = 0x1000; |
| |
| static final int ANNOTATION = 0x2000; |
| |
| static final int ENUM = 0x4000; |
| |
| /** |
| * Constructs a new {@code Modifier} instance. |
| */ |
| public Modifier() { |
| } |
| |
| /** |
| * Indicates whether or not the specified modifiers contain the {@code |
| * abstract} modifier. |
| * |
| * @param modifiers |
| * the modifiers to test |
| * @return {@code true} if the specified modifiers contain the {@code |
| * abstract} modifier, {@code false} otherwise |
| */ |
| public static boolean isAbstract(int modifiers) { |
| return ((modifiers & ABSTRACT) != 0); |
| } |
| |
| /** |
| * Indicates whether or not the specified modifiers contain the {@code |
| * final} modifier. |
| * |
| * @param modifiers |
| * the modifiers to test |
| * @return {@code true} if the specified modifiers contain the {@code |
| * final} modifier, {@code false} otherwise |
| */ |
| public static boolean isFinal(int modifiers) { |
| return ((modifiers & FINAL) != 0); |
| } |
| |
| /** |
| * Indicates whether or not the specified modifiers contain the {@code |
| * interface} modifier. |
| * |
| * @param modifiers |
| * the modifiers to test |
| * @return {@code true} if the specified modifiers contain the {@code |
| * interface} modifier, {@code false} otherwise |
| */ |
| public static boolean isInterface(int modifiers) { |
| return ((modifiers & INTERFACE) != 0); |
| } |
| |
| /** |
| * Indicates whether or not the specified modifiers contain the {@code |
| * native} modifier. |
| * |
| * @param modifiers |
| * the modifiers to test |
| * @return {@code true} if the specified modifiers contain the {@code |
| * native} modifier, {@code false} otherwise |
| */ |
| public static boolean isNative(int modifiers) { |
| return ((modifiers & NATIVE) != 0); |
| } |
| |
| /** |
| * Indicates whether or not the specified modifiers contain the {@code |
| * private} modifier. |
| * |
| * @param modifiers |
| * the modifiers to test |
| * @return {@code true} if the specified modifiers contain the {@code |
| * private} modifier, {@code false} otherwise |
| */ |
| public static boolean isPrivate(int modifiers) { |
| return ((modifiers & PRIVATE) != 0); |
| } |
| |
| /** |
| * Indicates whether or not the specified modifiers contain the {@code |
| * protected} modifier. |
| * |
| * @param modifiers |
| * the modifiers to test |
| * @return {@code true} if the specified modifiers contain the {@code |
| * protected} modifier, {@code false} otherwise |
| */ |
| public static boolean isProtected(int modifiers) { |
| return ((modifiers & PROTECTED) != 0); |
| } |
| |
| /** |
| * Indicates whether or not the specified modifiers contain the {@code |
| * public} modifier. |
| * |
| * @param modifiers |
| * the modifiers to test |
| * @return {@code true} if the specified modifiers contain the {@code |
| * public} modifier, {@code false} otherwise |
| */ |
| public static boolean isPublic(int modifiers) { |
| return ((modifiers & PUBLIC) != 0); |
| } |
| |
| /** |
| * Indicates whether or not the specified modifiers contain the {@code |
| * static} modifier. |
| * |
| * @param modifiers |
| * the modifiers to test |
| * @return {@code true} if the specified modifiers contain the {@code |
| * static} modifier, {@code false} otherwise |
| */ |
| public static boolean isStatic(int modifiers) { |
| return ((modifiers & STATIC) != 0); |
| } |
| |
| /** |
| * Indicates whether or not the specified modifiers contain the {@code |
| * strict} modifier. |
| * |
| * @param modifiers |
| * the modifiers to test |
| * @return {@code true} if the specified modifiers contain the {@code |
| * strict} modifier, {@code false} otherwise |
| */ |
| public static boolean isStrict(int modifiers) { |
| return ((modifiers & STRICT) != 0); |
| } |
| |
| /** |
| * Indicates whether or not the specified modifiers contain the {@code |
| * synchronized} modifier. |
| * |
| * @param modifiers |
| * the modifiers to test |
| * @return {@code true} if the specified modifiers contain the {@code |
| * synchronized} modifier, {@code false} otherwise |
| */ |
| public static boolean isSynchronized(int modifiers) { |
| return ((modifiers & SYNCHRONIZED) != 0); |
| } |
| |
| /** |
| * Indicates whether or not the specified modifiers contain the {@code |
| * transient} modifier. |
| * |
| * @param modifiers |
| * the modifiers to test |
| * @return {@code true} if the specified modifiers contain the {@code |
| * transient} modifier, {@code false} otherwise |
| */ |
| public static boolean isTransient(int modifiers) { |
| return ((modifiers & TRANSIENT) != 0); |
| } |
| |
| /** |
| * Indicates whether or not the specified modifiers contain the {@code |
| * volatile} modifier. |
| * |
| * @param modifiers |
| * the modifiers to test |
| * @return {@code true} if the specified modifiers contain the {@code |
| * volatile} modifier, {@code false} otherwise |
| */ |
| public static boolean isVolatile(int modifiers) { |
| return ((modifiers & VOLATILE) != 0); |
| } |
| |
| /** |
| * Returns a string containing the string representation of all modifiers |
| * present in the specified modifiers. Modifiers appear in the order |
| * specified by the Java Language Specification: |
| * |
| * {@code public private protected abstract static final transient volatile native synchronized interface strict} |
| * |
| * @param modifiers |
| * the modifiers to print |
| * @return a printable representation of the modifiers |
| */ |
| @SuppressWarnings("nls") |
| public static java.lang.String toString(int modifiers) { |
| StringBuilder buf = new StringBuilder(); |
| |
| if (isPublic(modifiers)) { |
| buf.append("public "); |
| } |
| if (isProtected(modifiers)) { |
| buf.append("protected "); |
| } |
| if (isPrivate(modifiers)) { |
| buf.append("private "); |
| } |
| if (isAbstract(modifiers)) { |
| buf.append("abstract "); |
| } |
| if (isStatic(modifiers)) { |
| buf.append("static "); |
| } |
| if (isFinal(modifiers)) { |
| buf.append("final "); |
| } |
| if (isTransient(modifiers)) { |
| buf.append("transient "); |
| } |
| if (isVolatile(modifiers)) { |
| buf.append("volatile "); |
| } |
| if (isSynchronized(modifiers)) { |
| buf.append("synchronized "); |
| } |
| if (isNative(modifiers)) { |
| buf.append("native "); |
| } |
| if (isStrict(modifiers)) { |
| buf.append("strictfp "); |
| } |
| if (isInterface(modifiers)) { |
| buf.append("interface "); |
| } |
| if (buf.length() == 0) { |
| return ""; |
| } |
| buf.setLength(buf.length() - 1); |
| return buf.toString(); |
| } |
| } |