如何从ArrayList检索数据由数组对象组成 [英] How to retrieve data from ArrayList consists of array objects
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问题描述
我的arraylist包含String数组对象。
我如何获得所有价值?
我的代码在下面,
String cordinates1c,cordinates2l,cordinates2m;
String [] array1 = {cordinates1c,cordinates2l,cordinates2m};
String [] array2 = {cordinates1c,cordinates2l,cordinates2m};
ArrayList alist = new ArrayList();
alist.add(array1);
alist.add(array2);
// retreieving
for(int i = 0; i< alist.size(); i ++)
System.out.println( 的ArrayList = + alist.get(I));
如果我尝试检索上面给出的,
07-12 12:42:09.977:INFO / System.out(743):arrayList = [[Ljava.lang.String; @ 43e11b28]
怎么做?
解决方案
($ i $ 0; i< alist.size(); i ++){
for(String a:alist.get(i)) {
System.out.println(a);
}
}
你也必须迭代字符串数组。
My arraylist contains String array objects. How Can I get all values? My code is below,
String cordinates1c,cordinates2l,cordinates2m;
String[] array1={cordinates1c,cordinates2l,cordinates2m};
String[] array2={cordinates1c,cordinates2l,cordinates2m};
ArrayList alist=new ArrayList();
alist.add(array1);
alist.add(array2);
//retreieving
for(int i=0;i<alist.size();i++)
System.out.println("arrayList="+alist.get(i));
if I try to retrieve like above it gives,
07-12 12:42:09.977: INFO/System.out(743): arrayList=[[Ljava.lang.String;@43e11b28]
How to do that?
解决方案
for(int i=0;i<alist.size();i++) {
for (String a : alist.get(i)) {
System.out.println(a);
}
}
You have to iterate over the array of strings, too.
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