我是
Java的新手我如何在HashMap中存储整数值数组,之后我将这个HashMap写入txt文件,但这并不重要.我可以存储单个字段,但不能存储数组.有任何想法吗 ？
public void salveazaObiectulCreat(String caleSpreFisier) {
HashMap map = new HashMap();
map.put ("Autorul",numelePrenumeleAutorului);
map.put ("Denumirea cartii",denumireaCartii);
map.put ("Culoarea cartii",culoareaCartii);
map.put ("Genul cartii",gen);
map.put ("Limba",limba);
map.put ("Numarul de copii",numarulDeCopii);
map.put ("Numarul de pagini",numarulDePagini);
map.put ("Pretul cartii",pretulCartii);
try {
File file = new File(caleSpreFisier);
FileOutputStream f = new FileOutputStream(file);
ObjectOutputStream s = new ObjectOutputStream(f);
s.writeObject(map);
s.close();
} catch(Exception e){
System.out.println("An exception has occured");
}
}
解决方法
HashMap<String,List<Integer>> map = new HashMap<String,List<Integer>>(); HashMap<String,int[]> map = new HashMap<String,int[]>();
选择一个,例如
HashMap<String,List<Integer>>();
map.put("Something",new ArrayList<Integer>());
for (int i=0;i<numarulDeCopii; i++) {
map.get("Something").add(coeficientUzura[i]);
}
要不就
HashMap<String,int[]>();
map.put("Something",coeficientUzura);
