小编Eda*_*dax的帖子

所以我试图在Java中创建一个简单的程序来读取文本文件(来自命令行参数),用户可以检查他们输入的数字是否在文本文件中.

File inputFile = new File(args[0]);
Scanner scanman = new Scanner(inputFile); //Scans the input file
Scanner scanman_2 = new Scanner(System.in); //Scans for keyboard input
int storage[] = new int[30]; //Will be used to store the numbers from the .txt file

for(int i=0; i<storage.length; i++) {
  storage[i]=scanman.nextInt();
  }
System.out.println("WELCOME TO THE NUMERICAL DATABASE"+
                  "\nTO CHECK TO SEE IF YOUR NUMBER IN THE DATABASE"+
                  "\nPLEASE ENTER IT BELOW! TO QUIT: HIT CTRL+Z!");
while(scanman_2.hasNext()){
  int num_store = scanman_2.nextInt();
  boolean alert = false;
  for …

我正在开发一个Java项目,我想知道Java是否在Python中有类似的"in"/"not in"运算符,如下例所示.

>>>"jim" in "jimbo"
>>>True