hadoop数据类型

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.hadoop.io.WritableComparable;
public class Http implements WritableComparable<Http>
{
public Http(){ }

private String value;

public Http(String value)
{
setValue(value);
}
public String getValue()
{
return value;
}
public void setValue(String value)
{
this.value = value;
}
public void readFields(DataInput in) throws IOException
{
value = in.readUTF();
}
public void write(DataOutput out) throws IOException
{
out.writeUTF(value);
}
public int compareTo(Http http)
{
return (value.compareTo(http.value));
}