Apache Ignite : How to list all tables and all Caches

Get all cache names: Ignite.cacheNames(). Then use Ignite.cache(String) to get the cache instance.

Get SQL tables:

CacheConfiguration ccfg = cache.getConfiguration(CacheConfiguration.class);
Collection<QueryEntity> entities = ccfg.getQueryEntities();

Each query entity represents a table.

You can read using h2 query. SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES where TABLE_SCHEMA is the cache name

ClientConfiguration cfg = new ClientConfiguration().setAddresses(host+":"+port).
                        setUserName(username).setUserPassword(pwd); 
private static IgniteClient igniteClient = Ignition.startClient(cfg);
private static ClientCache<Integer, String>
 cache=igniteClient.getOrCreateCache(cacheName); 
QueryCursor<List<?>> cursor =cache.query(new SqlFieldsQuery("SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES where TABLE_SCHEMA='"+cacheName+"'"));
                for (List<?> row : cursor) {
                    System.out.println(row.get(0));                           
                }