How to set hbase HMaster host? - eclipse

Question

I wrote a program in Eclipse to test the remote connection to HBase. This is modified from HBase Example API Usage. It does very basic things: connect to hbase, drop a table if exists, then create a new one. Here's the code :
public class TableTest {
private static Configuration conf = null;
static{
conf = HBaseConfiguration.create();
conf.set("hbase.zookeeper.quorum","192.168.12.120");
conf.set("hbase.zookeeper.property.clientPort","2181");
//conf.set("hbase.master", "192.168.12.120:12000"); // not work
}
public static void main(String[] args){
String tableName = "hbase_table";
try {
Connection connection = ConnectionFactory.createConnection(conf);
Admin admin = connection.getAdmin();
HTableDescriptor table = new HTableDescriptor(TableName.valueOf(tableName));
table.addFamily(new HColumnDescriptor("info"));
if(admin.tableExists(table.getTableName())){
admin.disableTable(table.getTableName());
admin.deleteTable(table.getTableName());
}
admin.createTable(table);
} catch (IOException e) {
e.printStackTrace();
}
}
}
However, I got some problems for making the connection work. The message is the following. On one side, the program searched the HRegionServer at 192.168.12.120 on port 16020, on another side, it searched the HMaster at localhost 127.0.0.1 on port 12000. This broke the connection, because both HRegionServer and HMaster are running at 192.168.12.120.
1294 DEBUG [2015-08-21 11:08:49] Use SIMPLE authentication for service ClientService, sasl=false
1311 DEBUG [2015-08-21 11:08:49] Connecting to /192.168.12.120:16020
1357 DEBUG [2015-08-21 11:08:49] Reading reply sessionid:0x14f39c8a9f20060, packet:: clientPath:null serverPath:null finished:false header:: 5,3 replyHeader:: 5,1210,0 request:: '/hbase,F response:: s{4,4,1439021727692,1439021727692,0,116,0,0,0,16,1191}
1360 DEBUG [2015-08-21 11:08:49] Reading reply sessionid:0x14f39c8a9f20060, packet:: clientPath:null serverPath:null finished:false header:: 6,4 replyHeader:: 6,1210,0 request:: '/hbase/master,F response:: #ffffffff000146d61737465723a3132303030ffffffc4ffffffbbffffffbcffffffd251ffffffb2ffffffe0ffffffb950425546a15a96c6f63616c686f737410ffffffe05d18ffffff89ffffffc5ffffffa1fffffff1fffffff42910018ffffff8a7d,s{1170,1170,1440125319355,1440125319355,0,0,0,94357651205521495,57,0,1170}
1369 DEBUG [2015-08-21 11:08:49] Use SIMPLE authentication for service MasterService, sasl=false
1369 DEBUG [2015-08-21 11:08:49] Connecting to localhost/127.0.0.1:12000
So how to set hbase master host at 192.168.12.120 ? Can somebody help ?
Here're 2 docs for the configuration :
Apache HBase ™ Reference Guide: 7. Default Configuration
Github: apache/hbase/.../hbase-default.xml