Question

java 如何输出arrylist中的数据

Answer 1

for ( int i = 0; i < arrayList.size(); i++){
System.out.println(arrayList.get(i));
}

Answer 2

直接 System.out.println(list);就可以

Answer 3

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class test {
public static void main(String[] args) {
List list=new ArrayList();
list.add("abc");
list.add("bbb");
list.add("bbb1");
list.add("bbb2");
list.add("bbb3");
if(!list.isEmpty()){
Iterator in=list.iterator();
while(in.hasNext()){
System.out.println(in.next());
}
}
}

}