Guava系列：Table使用方法（根据行列查找组合）

场景

Table使用方法（根据行列查找组合）

demo

package com.nio4444.demo;

import com.google.common.collect.HashBasedTable;
import com.google.common.collect.Table;

import java.util.Map;
import java.util.Set;

public class TableDemo {
    public static void main(String[] args) {

        /*
         *  Company: IBM, Microsoft, TCS
         *  IBM         -> {101:Mahesh, 102:Ramesh, 103:Suresh}
         *  Microsoft   -> {101:Sohan, 102:Mohan, 103:Rohan }
         *  TCS         -> {101:Ram, 102: Shyam, 103: Sunil }
         *
         * */

        Table<String, String, String> employeeTable = HashBasedTable.create();

        employeeTable.put("IBM", "101", "Mahesh");
        employeeTable.put("IBM", "102", "Ramesh");
        employeeTable.put("IBM", "103", "Suresh");

        employeeTable.put("Microsoft", "111", "Sohan");
        employeeTable.put("Microsoft", "102", "Mohan");
        employeeTable.put("Microsoft", "113", "Rohan");

        employeeTable.put("TCS", "121", "Ram");
        employeeTable.put("TCS", "102", "Shyam");
        employeeTable.put("TCS", "123", "Sunil");

        //get Map corresponding to IBM
        Map<String, String> ibmEmployees = employeeTable.row("IBM");

        System.out.println("==IBM Employees");
        for (Map.Entry<String, String> entry : ibmEmployees.entrySet()) {
            System.out.println("  " + entry.getKey() + ",  " + entry.getValue());
        }

        //get all the unique keys of the table
        Set<String> employers = employeeTable.rowKeySet();
        System.out.print("==Employers: ");
        for (String employer : employers) {
            System.out.print(employer + " ");
        }
        System.out.println();

        //get a Map corresponding to 102
        System.out.println("==查找102Employer: " ) ;
        Map<String, String> EmployerMap = employeeTable.column("102");
        for (Map.Entry<String, String> entry : EmployerMap.entrySet()) {
            System.out.println("Employer: " + entry.getKey() + ", Name: " + entry.getValue());
        }
    }
}