Java example source code file (DoubleValueImpl.java)

This example Java source code file (DoubleValueImpl.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

can't, doublevalue, doublevalueimpl, invalidtypeexception, jdi, primitivevalueimpl, string

The DoubleValueImpl.java Java example source code

/*
 * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.tools.jdi;

import com.sun.jdi.*;

public class DoubleValueImpl extends PrimitiveValueImpl
                             implements DoubleValue {
    private double value;

    DoubleValueImpl(VirtualMachine aVm,double aValue) {
        super(aVm);

        value = aValue;
    }

    public boolean equals(Object obj) {
        if ((obj != null) && (obj instanceof DoubleValue)) {
            return (value == ((DoubleValue)obj).value()) &&
                   super.equals(obj);
        } else {
            return false;
        }
    }

    public int compareTo(DoubleValue obj) {
        double other = obj.value();
        if (value() < other) {
            return -1;
        } else if (value() == other) {
            return 0;
        } else {
            return 1;
        }
    }

    public int hashCode() {
        /*
         * TO DO: Better hash code
         */
        return intValue();
    }

    public Type type() {
        return vm.theDoubleType();
    }

    public double value() {
        return value;
    }

    public boolean booleanValue() {
        return(value == 0.0)?false:true;
    }

    public byte byteValue() {
        return(byte)value;
    }

    public char charValue() {
        return(char)value;
    }

    public short shortValue() {
        return(short)value;
    }

    public int intValue() {
        return(int)value;
    }

    public long longValue() {
        return(long)value;
    }

    public float floatValue() {
        return(float)value;
    }

    public double doubleValue() {
        return value;
    }

    byte checkedByteValue() throws InvalidTypeException {
        if ((value > Byte.MAX_VALUE) || (value < Byte.MIN_VALUE)) {
            throw new InvalidTypeException("Can't convert " + value + " to byte");
        } else {
            return super.checkedByteValue();
        }
    }

    char checkedCharValue() throws InvalidTypeException {
        if ((value > Character.MAX_VALUE) || (value < Character.MIN_VALUE)) {
            throw new InvalidTypeException("Can't convert " + value + " to char");
        } else {
            return super.checkedCharValue();
        }
    }

    short checkedShortValue() throws InvalidTypeException {
        if ((value > Short.MAX_VALUE) || (value < Short.MIN_VALUE)) {
            throw new InvalidTypeException("Can't convert " + value + " to short");
        } else {
            return super.checkedShortValue();
        }
    }

    int checkedIntValue() throws InvalidTypeException {
        if ((value > Integer.MAX_VALUE) || (value < Integer.MIN_VALUE)) {
            throw new InvalidTypeException("Can't convert " + value + " to int");
        } else {
            return super.checkedIntValue();
        }
    }

    long checkedLongValue() throws InvalidTypeException {
        long longValue = (long)value;
        if (longValue != value) {
            throw new InvalidTypeException("Can't convert " + value + " to long");
        } else {
            return super.checkedLongValue();
        }
    }

    float checkedFloatValue() throws InvalidTypeException {
        float floatValue = (float)value;
        if (floatValue != value) {
            throw new InvalidTypeException("Can't convert " + value + " to float");
        } else {
            return super.checkedFloatValue();
        }
    }

    public String toString() {
        return "" + value;
    }

    byte typeValueKey() {
        return JDWP.Tag.DOUBLE;
    }
}