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java/org/apache/tomcat/util/bcel/classfile/ConstantUtf8.java

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+/*
+ *  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 org.apache.tomcat.util.bcel.classfile;
+
+import java.io.DataInput;
+import java.io.IOException;
+
+import org.apache.tomcat.util.bcel.Const;
+
+/**
+ * This class is derived from the abstract
+ * <A HREF="org.apache.tomcat.util.bcel.classfile.Constant.html">Constant</A> class
+ * and represents a reference to a Utf8 encoded string.
+ *
+ * @see     Constant
+ */
+public final class ConstantUtf8 extends Constant {
+
+    private final String bytes;
+
+    static ConstantUtf8 getInstance(final DataInput input) throws IOException {
+        return new ConstantUtf8(input.readUTF());
+    }
+
+    /**
+     * @param bytes Data
+     */
+    private ConstantUtf8(final String bytes) {
+        super(Const.CONSTANT_Utf8);
+        if (bytes == null) {
+            throw new IllegalArgumentException("bytes must not be null!");
+        }
+        this.bytes = bytes;
+    }
+
+    /**
+     * @return Data converted to string.
+     */
+    public final String getBytes() {
+        return bytes;
+    }
+}