http://blog.csdn.net/javazejian/article/details/51348320
package com.pingan.haofang.agent.saas.dict.dto; import java.util.List; public class SubwayLineDtoTest { private Long sid; private String lineName; public Long getSid() { return sid; } public void setSid(Long sid) { this.sid = sid; } public String getLineName() { return lineName; } public void setLineName(String lineName) { this.lineName = lineName; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + sid.intValue(); result = prime * result + ((lineName == null) ? 0 : lineName.hashCode()); return result; } //使用alt + shift + s 然后选择h重写equals()方法 @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; SubwayLineDtoTest other = (SubwayLineDtoTest) obj; if (sid != other.sid) return false; if (lineName == null) { if (other.lineName != null) return false; } else if (!lineName.equals(other.lineName)) return false; return true; } }
Map<SubwayLineDtoTest, List<SubwayStationDto>> stations = new HashMap<SubwayLineDtoTest, List<SubwayStationDto>>(); SubwayLineDtoTest compareSld = new SubwayLineDtoTest(); compareSld.setSid(Long.valueOf(subwayList.get(0).toString())); compareSld.setLineName(subwayList.get(1).toString()); if(stations.containsKey(compareSld)) {