guava之Table

相当于双键的Map

Table<String,String,Integer> table = HashBasedTable.create();table.put("json","a",100);table.put("json","b",90);table.put("marry","a",95);table.put("marry","c",80);Set<Table.Cell<String,String,Integer>> set = table.cellSet();Table.Cell tc = set.iterator().next();System.out.println(tc.getColumnKey());System.out.println(set);

结果:

a
[(marry,a)=95, (marry,c)=80, (json,a)=100, (json,b)=90]