package com.baeldung.aggregation.model; import org.springframework.data.annotation.Id; public class StatePopulation { @Id private String state; private Integer statePop; public String getState() { return state; } public void setState(String state) { this.state = state; } public Integer getStatePop() { return statePop; } public void setStatePop(Integer statePop) { this.statePop = statePop; } @Override public String toString() { StringBuilder builder = new StringBuilder(); builder.append("StatePopulation [state="); builder.append(state); builder.append(", statePop="); builder.append(statePop); builder.append("]"); return builder.toString(); } }