/** * Copyright 2005 The Apache Software Foundation * * 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 org.apache.hadoop.io;import java.io.*;/** A WritableComparable for floats. */public class FloatWritable implements WritableComparable {  private float value;  public FloatWritable() {}  public FloatWritable(float value) { set(value); }  /** Set the value of this FloatWritable. */  public void set(float value) { this.value = value; }  /** Return the value of this FloatWritable. */  public float get() { return value; }  public void readFields(DataInput in) throws IOException {    value = in.readFloat();  }  public void write(DataOutput out) throws IOException {    out.writeFloat(value);  }  /** Returns true iff <code>o</code> is a FloatWritable with the same value. */  public boolean equals(Object o) {    if (!(o instanceof FloatWritable))      return false;    FloatWritable other = (FloatWritable)o;    return this.value == other.value;  }  public int hashCode() {    return Float.floatToIntBits(value);  }  /** Compares two FloatWritables. */  public int compareTo(Object o) {    float thisValue = this.value;    float thatValue = ((FloatWritable)o).value;    return (thisValue<thatValue ? -1 : (thisValue==thatValue ? 0 : 1));  }  public String toString() {    return Float.toString(value);  }  /** A Comparator optimized for FloatWritable. */   public static class Comparator extends WritableComparator {    public Comparator() {      super(FloatWritable.class);    }    public int compare(byte[] b1, int s1, int l1,                       byte[] b2, int s2, int l2) {      float thisValue = readFloat(b1, s1);      float thatValue = readFloat(b2, s2);      return (thisValue<thatValue ? -1 : (thisValue==thatValue ? 0 : 1));    }  }  static {                                        // register this comparator    WritableComparator.define(FloatWritable.class, new Comparator());  }}