我正在尝试对用户输入进行尝试捕获,如果通过了检查,则将用户输入放入数组,但是如果我输入无效的输入,它将用0替换该索引并移至下一个索引。我正在尝试弄清楚如何让重新提示在for循环内工作,以便该特定索引中的无效值被替换为有效的用户输入。数组中值的顺序无关紧要。我正尝试在不导入其他Java库的情况下执行此操作!
非常感谢您的帮助!我是编程和Java的新手。感谢您的时间 !
public static double[] getAmount()
{
int MAX_NUM = 10;
double[] numArray = new double[MAX_NUM];
for (int i = 0; i < numArray.length;i++)
{
double numInput;
do
{
try
{
numInput = Double.parseDouble(JOptionPane.showInputDialog("Enter amounts in $: "));
}
catch (NumberFormatException e)
{
numInput = MAX_NUM - 11;
}
if (numInput < 0 || numInput > 999999)
{
JOptionPane.showMessageDialog(null, "Error. Please enter valid amount in dollars");
numInput = Double.parseDouble(JOptionPane.showInputDialog("Enter amount in $: "));
}
else
{
numArray[i] = numInput;
}
}
while (numInput < 0 && numInput > 999999);
}
return numArray;
}
public static double[] getAmount()
{
int MAX_NUM = 10;
double[] numArray = new double[MAX_NUM];
int i = 0;
while (i < numArray.length)
{
double numInput;
try
{
numInput = Double.parseDouble(JOptionPane.showInputDialog("Enter amounts in $: "));
}
catch (NumberFormatException e)
{
numInput = MAX_NUM - 11;
}
if (numInput < 0 || numInput > 999999)
{
JOptionPane.showMessageDialog(null, "Error. Please enter valid amount in dollars");
numInput = Double.parseDouble(JOptionPane.showInputDialog("Enter amount in $: "));
}
else
{
numArray[i] = numInput;
i++;
}
}
return numArray;
}
这应该起作用:
public static double[] getAmount()
{
int MAX_NUM = 10;
double[] numArray = new double[MAX_NUM];
for (int i = 0; i < numArray.length;i++)
{
double numInput;
do
{
try
{
numInput = Double.parseDouble(JOptionPane.showInputDialog("Enter amounts in $: "));
}
catch (NumberFormatException e)
{
numInput = MAX_NUM - 11;
}
if (numInput < 0 || numInput > 999999)
{
JOptionPane.showMessageDialog(null, "Error. Please enter valid amount in dollars");
}
}
while (numInput < 0 || numInput > 999999);
numArray[i] = numInput;
}
return numArray;
}