需要继承Map的equals函数和hashCode函数
package com.category;
import java.util.HashMap;
public class GenCategoryLevelData {
private static HashMap<Category, Integer> categoryLevel = new HashMap<Category, Integer>();
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
}
/**
* 分类
* @author ouyangyewei
*
*/
public static class Category {
public long categoryId;
public String categoryName;
@Override
public boolean equals(Object obj) {
Category category = (Category)obj;
return (this.categoryId==category.categoryId
&& this.categoryName.equals(category.categoryName));
}
@Override
public final int hashCode() {
int hashCode = 17;
hashCode = hashCode * 31 + 1;
hashCode = hashCode * 31 + 1;
return hashCode;
}
public Category() {
// empty
}
public Category(long categoryId, String categoryName) {
this.categoryId = categoryId;
this.categoryName = categoryName;
}
public long getCategoryId() {
return categoryId;
}
public void setCategoryId(long categoryId) {
this.categoryId = categoryId;
}
public String getCategoryName() {
return categoryName;
}
public void setCategoryName(String categoryName) {
this.categoryName = categoryName;
}
}
}