public class Test{
public static int[] makeArr(int length){
return (new int[length]);
}
public static void main(final String[] args){
int[] ddd = makeArr(10);
System.out.println(ddd.length);
}
}
public static int[] makeArr(int length){
return (new int[length]);
}
public static void main(final String[] args){
int[] ddd = makeArr(10);
System.out.println(ddd.length);
}
}
Arrays.fill(ddd,0);ArrayList lst = new ArrayList();
lst.add(obj);
...
lst.get(int);多看看help
ArrayList al = new ArrayList();
al.put(object); //添加数据
al.get(i);(i=1,2...) //获得数据
import java.util.Collection;public class test
{
public test()
{
}
public static void main(String[] args)
{
ArrayList list = new ArrayList();
for(int i = 0 ; i < 10 ; i ++)
{
list.add(i,String.valueOf(i));
}
for(int i = 0 ; i < list.size(); i ++)
{
System.out.print(list.get(i)+" | ");
}
list.set(5,"modify");
System.out.println();
for(int i = 0 ; i < list.size(); i ++)
{
System.out.print(list.get(i)+" | ");
} }
}
ArrayList al = new ArrayList();
Integer o1 = new Integer(10);
String o2 = new String("dsa");
al.add(o1);
al.add(o2);
}