用java创建hbase表，在用java语言给hbase添加用户名、性别和密码，最后用java语言写一个根据用户名和密码的登录功能

好的，下面是Java代码示例：

1. 创建HBase表

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.util.Bytes;

import java.io.IOException;

public class HBaseTable {
    private static final String TABLE_NAME = "user_info";
    private static final String COLUMN_FAMILY = "info";
    private static final String[] COLUMN_QUALIFIERS = {"username", "gender", "password"};

    public static void createTable() throws IOException {
        // 创建HBase配置对象
        Configuration conf = HBaseConfiguration.create();
        // 创建HBase连接对象
        Connection conn = ConnectionFactory.createConnection(conf);
        // 创建HBase管理对象
        Admin admin = conn.getAdmin();

        // 创建表描述对象
        TableName tableName = TableName.valueOf(TABLE_NAME);
        HTableDescriptor tableDescriptor = new HTableDescriptor(tableName);

        // 创建列族描述对象
        HColumnDescriptor columnDescriptor = new HColumnDescriptor(Bytes.toBytes(COLUMN_FAMILY));

        // 设置列族的最大版本数和压缩方式
        columnDescriptor.setMaxVersions(1);
        columnDescriptor.setCompressionType(Compression.Algorithm.NONE);

        // 将列族描述对象添加到表描述对象中
        tableDescriptor.addFamily(columnDescriptor);

        // 创建表
        admin.createTable(tableDescriptor);

        // 关闭资源
        admin.close();
        conn.close();
    }
}

2. 插入数据

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.util.Bytes;

import java.io.IOException;

public class HBaseInsert {
    private static final String TABLE_NAME = "user_info";
    private static final String COLUMN_FAMILY = "info";
    private static final String[] COLUMN_QUALIFIERS = {"username", "gender", "password"};

    public static void insertData(String username, String gender, String password) throws IOException {
        // 创建HBase配置对象
        Configuration conf = HBaseConfiguration.create();
        // 创建HBase连接对象
        Connection conn = ConnectionFactory.createConnection(conf);
        // 获取表对象
        Table table = conn.getTable(TableName.valueOf(TABLE_NAME));

        // 构造行键
        String rowKey = username;

        // 创建Put对象，用于添加数据
        Put put = new Put(Bytes.toBytes(rowKey));

        // 添加列族、列和值
        put.addColumn(Bytes.toBytes(COLUMN_FAMILY), Bytes.toBytes(COLUMN_QUALIFIERS[0]), Bytes.toBytes(username));
        put.addColumn(Bytes.toBytes(COLUMN_FAMILY), Bytes.toBytes(COLUMN_QUALIFIERS[1]), Bytes.toBytes(gender));
        put.addColumn(Bytes.toBytes(COLUMN_FAMILY), Bytes.toBytes(COLUMN_QUALIFIERS[2]), Bytes.toBytes(password));

        // 提交数据
        table.put(put);

        // 关闭资源
        table.close();
        conn.close();
    }
}

3. 登录功能

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.util.Bytes;

import java.io.IOException;

public class HBaseLogin {
    private static final String TABLE_NAME = "user_info";
    private static final String COLUMN_FAMILY = "info";
    private static final String[] COLUMN_QUALIFIERS = {"username", "gender", "password"};

    public static boolean login(String username, String password) throws IOException {
        // 创建HBase配置对象
        Configuration conf = HBaseConfiguration.create();
        // 创建HBase连接对象
        Connection conn = ConnectionFactory.createConnection(conf);
        // 获取表对象
        Table table = conn.getTable(TableName.valueOf(TABLE_NAME));

        // 构造行键
        String rowKey = username;

        // 创建Get对象，用于查询数据
        Get get = new Get(Bytes.toBytes(rowKey));

        // 添加列族和列
        get.addColumn(Bytes.toBytes(COLUMN_FAMILY), Bytes.toBytes(COLUMN_QUALIFIERS[2]));

        // 查询数据
        Result result = table.get(get);

        // 获取密码
        String pwd = Bytes.toString(result.getValue(Bytes.toBytes(COLUMN_FAMILY), Bytes.toBytes(COLUMN_QUALIFIERS[2])));

        // 关闭资源
        table.close();
        conn.close();

        // 判断密码是否匹配
        return pwd != null && pwd.equals(password);
    }
}

以上是Java代码示例，可以根据实际情况进行修改和调整。