字符串列表的散列表给我OutOfMemoryError

我的程序中声明Hashmap的一行触发错误。字符串列表的散列表给我OutOfMemoryError

public class SubjectTeacherPeriod{ 
private int id; 

private Map<String, Integer> num_attribute_map; 
private Map<String,List<String>> str_attribute_map; 

private Period period; 
private List<Period> periodList; 

public SubjectTeacherPeriod(){ 
    num_attribute_map = new HashMap<String, Integer>(); 
    str_attribute_map = new HashMap<String,List<String>>(); //THIS LINE 
} 
....

负责：

[email protected]:~/dev/drools/timetabler$ java -server in.co.technovia.timetabler.TimeTableApp 
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space 
    at java.util.HashMap.<init>(HashMap.java:226) 
    at in.co.technovia.timetabler.domain.SubjectTeacherPeriod.<init>(SubjectTeacherPeriod.java:38) 
    at in.co.technovia.timetabler.solution.TimeTableInitializer.createTimeTable(TimeTableInitializer.java:66) 
    at in.co.technovia.timetabler.TimeTableApp.main(TimeTableApp.java:37)

什么是错我的HashMap的？

更新：就像所有的答案猜测，创造了太多的变数不好的循环变量。这不是hashmap本身的问题。

来源

2012-02-25 aitchnyu

是否可以复制？ – 2012-02-25 12:35:51