package com.felix.hbaseapi_test;

/*   
        这是旧版的 API操作
    */
public class hbaseapifelix {

    public static final String TABLE_NAME = "testapi";
    public static final String COLUMNFAMILY_NAME = "cf";
    public static final String ROW_KEY = "rowkey1";
    
    public static void main(String[] args) throws Exception {
        Configuration conf = HBaseConfiguration.create();
        HBaseAdmin admin=new HBaseAdmin(conf);
        createtable(admin);
        HTable htable=new HTable(conf, TABLE_NAME);
        
        put(htable,"age","25");
        put(htable,"age","26");
        put(htable,"age","27");
        put(htable,"age","28");
        
        //Get
        Get get=new Get(ROW_KEY.getBytes());
        htable.get(get);
        
        //scan
        Scan scan=new Scan();
        ResultScanner scanner = htable.getScanner(scan);
    }

    private static void put(HTable htable,String column,String value) throws IOException {
        Put put=new Put(ROW_KEY.getBytes());
        put.addColumn(COLUMNFAMILY_NAME.getBytes(), column.getBytes(), value.getBytes());
        htable.put(put);
    }

    private static void createtable(HBaseAdmin admin) throws IOException {
        HTableDescriptor desc = new HTableDescriptor(TABLE_NAME);
        HColumnDescriptor family = new HColumnDescriptor(COLUMNFAMILY_NAME);
        desc.addFamily(family);
       family.setMaxVersions(3);
        if (!admin.tableExists(TABLE_NAME)) {
            //该表不存在，直接创建
            admin.createTable(desc);
        }else{
            //该表存在，删除后再创建
            if(!admin.isTableAvailable(TABLE_NAME)){
                //该表disable，直接删除
                admin.deleteTable(TABLE_NAME);
            }else{
                //该表enable,先disable,再删除
                admin.disableTable(TABLE_NAME);
                admin.deleteTable(TABLE_NAME);
            }
            admin.createTable(desc);
        }
    }

}

package com.felix.hbaseapi_test;


import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
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.Get;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.client.Table;


public class hbaseapifelix {

    public static final String TABLE_NAME = "testapi";
    public static final String COLUMNFAMILY_NAME = "cf";
    public static final String ROW_KEY = "rowkey1";
    
    public static void main(String[] args) throws Exception {
        Configuration conf = HBaseConfiguration.create();
        //下面的配置，在configuration文件中都配置过了这里没必要配置，也不方便
        //conf.set("hbase.rootdir", "hdfs://centos:9000/hbase");
        //conf.set("hbase.zookeeper.quorum","centos");
        //conf.set("hbase.zookeeper.property.clientPort", "2181");
    
         Connection connection = ConnectionFactory.createConnection(conf);
         Admin admin = connection.getAdmin();
         Table table = connection.getTable(TableName.valueOf("user"));
         TableName name = table.getName();
         
         initBeforeCreate(admin, name);
         createTable(admin, table);
        
         try {
             Put put=new Put("rowkey".getBytes());
             put.addColumn(COLUMNFAMILY_NAME.getBytes(), "age".getBytes(), "25".getBytes());
             put.addColumn(COLUMNFAMILY_NAME.getBytes(), "age".getBytes(), "26".getBytes());
             put.addColumn(COLUMNFAMILY_NAME.getBytes(), "age".getBytes(), "27".getBytes());
             put.addColumn(COLUMNFAMILY_NAME.getBytes(), "age".getBytes(), "28".getBytes());
             table.put(put);
         } finally {
           table.close();
           connection.close();
         }
         
        
        Get get = new Get(ROW_KEY.getBytes());
        Result result = table.get(get);
        
        Scan scan=new Scan();
        ResultScanner scanner = table.getScanner(scan);
         
    /*    HBaseAdmin admin=new HBaseAdmin(conf);
        createtable(admin);
        
        HTable htable=new HTable(conf, TABLE_NAME);
        
        put(htable,"age","25");
        put(htable,"age","26");
        put(htable,"age","27");
        put(htable,"age","28");
        
        //Get
        Get get=new Get(ROW_KEY.getBytes());
        htable.get(get);
        
        //scan
        Scan scan=new Scan();
        ResultScanner scanner = htable.getScanner(scan);*/
    }

    private static void initBeforeCreate(Admin admin, TableName name)
            throws IOException {
        /*创建前存在就删除
         * */
        if(admin.tableExists(name)){
             if(admin.isTableEnabled(name)){
                 admin.disableTable(name);
             }
             admin.deleteTable(name);
         }
    }

    private static void createTable(Admin admin, Table table)
            throws IOException {
        HTableDescriptor desc=new HTableDescriptor(table.getName());
        HColumnDescriptor family=new HColumnDescriptor(COLUMNFAMILY_NAME);
        family.setMaxVersions(3);
        family.setMinVersions(0);
        desc.addFamily(family);
        admin.createTable(desc);
    }

    /*private static void put(HTable htable,String column,String value) throws IOException {
        Put put=new Put(ROW_KEY.getBytes());
        put.addColumn(COLUMNFAMILY_NAME.getBytes(), column.getBytes(), value.getBytes());
        htable.put(put);
    }

    private static void createtable(HBaseAdmin admin) throws IOException {
        HTableDescriptor desc = new HTableDescriptor(TABLE_NAME);
        HColumnDescriptor family = new HColumnDescriptor(COLUMNFAMILY_NAME);
        desc.addFamily(family);
       family.setMaxVersions(3);
        if (!admin.tableExists(TABLE_NAME)) {
            //该表不存在，直接创建
            admin.createTable(desc);
        }else{
            //该表存在，删除后再创建
            if(!admin.isTableAvailable(TABLE_NAME)){
                //该表disable，直接删除
                admin.deleteTable(TABLE_NAME);
            }else{
                //该表enable,先disable,再删除
                admin.disableTable(TABLE_NAME);
                admin.deleteTable(TABLE_NAME);
            }
            admin.createTable(desc);
        }
    }*/

}

具体改成什么了，以及为什么修改，源码里面说的很清楚，比如：

HBaseAdmin is no longer a client API. It is marked InterfaceAudience.Private indicating that
* this is an HBase-internal class as defined in
* https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/InterfaceClassification.html
* There are no guarantees for backwards source / binary compatibility and methods or class can
* change or go away without deprecation.
* Use {@link Connection#getAdmin()} to obtain an instance of {@link Admin} instead of constructing
* an HBaseAdmin directly.

其他的自己关联源码自己看吧！