sequential search

　　

 

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import java.util.Scanner;   public class B {   public static void main(String[] args) {     String[] names={"aa","bb","cc","dd"};     System.out.println("name: ");     Scanner scanner=new Scanner(System.in);     String name=scanner.next();     int index=-1;     for(int i=0;i<names.length;++i){       if(names[i].equals(name)){         index=i;         System.out.println("found "+name+" "+i);         break;       }     }     if(index==-1) System.out.println("not found");       scanner.close();   } }

　　

 

 

申请了一个输入流 System.in，获得内存，但没有关闭