當條件在循環中繼續時遇到循環退出

-1

無論我輸入「y」還是「n」，程序都會退出while循環。我試着將一些==改爲.equals，但不管我進入循環的方式如何。當條件在循環中繼續時遇到循環退出

System.out.println("Just Cycling Caps provides three types of caps: Small caps – ID: 1 Price: $4.50, Medium caps – ID: 2 Price: $7.00, and Large caps – ID: 3 Price: $9.00"); 
continueOrder = "y"; 
//While loop to get items ordered 
while(continueOrder == "y"){ 
    //get desired cap size and quantity 
    System.out.println("Enter the ID of the item you would like"); 
    capSize = reader.nextInt(); 
    if(capSize == 1){ 
    price = 4.5; 
    System.out.println("How many small caps would you like?"); 
    quantityOfSmall = reader.nextInt(); 
    priceOfSmall = quantityOfSmall * price; 
    } 
    else if(capSize == 2){ 
    price = 7.0; 
    System.out.println("How many medium caps would you like?"); 
    quantityOfMedium = reader.nextInt(); 
    priceOfMedium = quantityOfMedium * price; 
    } 
    else if(capSize == 3){ 
    price = 9.0; 
    System.out.println("How many large caps would you like?"); 
    quantityOfLarge = reader.nextInt(); 
    priceOfLarge = quantityOfLarge * price; 
    } 
    //Ask the user if they would like to continue ordering 
    System.out.println("Would you like to purchase another product? (y/n)"); 
    continueOrder = reader.next(); 
    continueOrder = continueOrder.toLowerCase(); 
}

來源

2015-10-12 nfagan

更改此

while(continueOrder == "y")

到

while(continueOrder.equals("y"))

來源

2015-10-12 12:47:42

當條件在循環中繼續時遇到循環退出

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