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/**
 * Copyright (C) 2006 Google Inc.
 *
 * Licensed 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 com.google.inject.name;

import static com.google.common.base.Preconditions.checkNotNull;

import java.io.Serializable;
import java.lang.annotation.Annotation;

class NamedImpl implements Named, Serializable {

  private final String value;

  public NamedImpl(String value) {
    this.value = checkNotNull(value, "name");
  }

  public String value() {
    return this.value;
  }

  public int hashCode() {
    // This is specified in java.lang.Annotation.
    return (127 * "value".hashCode()) ^ value.hashCode();
  }

  public boolean equals(Object o) {
    if (!(o instanceof Named)) {
      return false;
    }

    Named other = (Named) o;
    return value.equals(other.value());
  }

  public String toString() {
    return "@" + Named.class.getName() + "(value=" + value + ")";
  }

  public Class annotationType() {
    return Named.class;
  }

  private static final long serialVersionUID = 0;
}




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