SQL
// make SQL query
QueryManager queryManager = workspace.getQueryManager();
// create query
String sqlStatement = "SELECT * FROM nt:unstructured WHERE CONTAINS(*,'quick')";
Query query = queryManager.createQuery(sqlStatement, Query.SQL);
// execute query and fetch result
QueryResult result = query.execute();
XPath
// make XPath query
QueryManager queryManager = workspace.getQueryManager();
// create query
String xpathStatement = "//element(*,nt:unstructured)[jcr:contains(., 'quick')]";
Query query = queryManager.createQuery(xpathStatement, Query.XPATH);
// execute query and fetch result
QueryResult result = query.execute();