/*
 * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
 */
/*
 * 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.
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package com.sun.org.apache.bcel.internal.classfile;

import java.io.DataInput;
import java.io.DataOutputStream;
import java.io.IOException;

import com.sun.org.apache.bcel.internal.Const;

This class is derived from the abstract Constant and represents a reference to a Double object.
See Also:
@LastModified: Jun 2019
/** * This class is derived from the abstract {@link Constant} * and represents a reference to a Double object. * * @see Constant * @LastModified: Jun 2019 */
public final class ConstantDouble extends Constant implements ConstantObject { private double bytes;
Params:
  • bytes – Data
/** * @param bytes Data */
public ConstantDouble(final double bytes) { super(Const.CONSTANT_Double); this.bytes = bytes; }
Initialize from another object.
/** * Initialize from another object. */
public ConstantDouble(final ConstantDouble c) { this(c.getBytes()); }
Initialize instance from file data.
Params:
  • file – Input stream
Throws:
/** * Initialize instance from file data. * * @param file Input stream * @throws IOException */
ConstantDouble(final DataInput file) throws IOException { this(file.readDouble()); }
Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class. I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.
Params:
  • v – Visitor object
/** * Called by objects that are traversing the nodes of the tree implicitely * defined by the contents of a Java class. I.e., the hierarchy of methods, * fields, attributes, etc. spawns a tree of objects. * * @param v Visitor object */
@Override public void accept( final Visitor v ) { v.visitConstantDouble(this); }
Dump constant double to file stream in binary format.
Params:
  • file – Output file stream
Throws:
/** * Dump constant double to file stream in binary format. * * @param file Output file stream * @throws IOException */
@Override public void dump( final DataOutputStream file ) throws IOException { file.writeByte(super.getTag()); file.writeDouble(bytes); }
Returns:data, i.e., 8 bytes.
/** * @return data, i.e., 8 bytes. */
public double getBytes() { return bytes; }
Params:
  • bytes – the raw bytes that represent the double value
/** * @param bytes the raw bytes that represent the double value */
public void setBytes( final double bytes ) { this.bytes = bytes; }
Returns:String representation.
/** * @return String representation. */
@Override public String toString() { return super.toString() + "(bytes = " + bytes + ")"; }
Returns:Double object
/** @return Double object */
@Override public Object getConstantValue( final ConstantPool cp ) { return bytes; } }