Java索引名 String nameOfTools=”“； 对于（int index=0；index

我希望对话框显示“您需要（工具名称）的数量”，而不是索引编号如何执行此操作？

然后您需要创建一个

ArrayList

来存储工具名称，如下所示：

String nameOfTools = "";

  for( int index = 0; index < userToolType; index++ )
  {
     nameOfTools = JOptionPane.showInputDialog( "Please enter name of tool " + ( index + 1 ) );

     //check blank
     if ( nameOfTools.equalsIgnoreCase("") )
     {
        JOptionPane.showMessageDialog(null, "You entered blank");
        System.exit( 0 );
     }

  }
  //Ask the number to buy for each tool
  String numberOfTools;
  double toolsNumber = 0;
  String amountOfTools;
  double moneyForTools;
  double totalMoneyToPay = 0;
  for ( int index = 0; index < userToolType; index++ )
  {
     numberOfTools = JOptionPane.showInputDialog( "How many you need to buy " + ( index + 1 ) );
     toolsNumber = Double.parseDouble( numberOfTools );

ArrayList toolsNames=new ArrayList（）；//获取所有名称
对于（int index=0；index

我猜您需要将工具存储在一个数组中，因为此时您似乎正在覆盖

nameOfTools

。创建一个名称数组并使用

array[index]

@주성호 请考虑接受一个答案，你今天已经问了3个问题，还没有接受任何一个问题！请学习java，例如阅读。

ArrayList<String> toolsNames = new ArrayList<String>(); // to take all names
for( int index = 0; index < userToolType; index++ ){
    String input = JOptionPane.showInputDialog( "Please enter name of tool " + ( index + 1 ) );
     if ( input.equals("") ){ //check blank
          JOptionPane.showMessageDialog(null, "You entered blank");
          System.exit( 0 );
     }
     toolsNames.add(input); // if it's not blank
}
//Ask the number to buy for each tool
String numberOfTools;
double toolsNumber = 0;
String amountOfTools;
double moneyForTools;
double totalMoneyToPay = 0;
for ( int index = 0; index < userToolType; index++ ){
       numberOfTools = JOptionPane.showInputDialog( "How many you need to buy from " + toolsNames.get(index));
       toolsNumber = Double.parseDouble( numberOfTools );
}