java - 将 int 转换为 String

Question

这个问题已经有答案了:

How do I convert from int to String? (20 个回答)

How to Convert an int to a String? [duplicate] (6 个回答)

已关闭 8 年前。

private JTextField resultTextField;
resultTextField.setText(" "); ...

private class InputListener implements ActionListener
{
    public void actionPerformed(ActionEvent e)
    {
        Stack<Integer> operandStack = new Stack<Integer>();
        Stack<Character> operatorStack = new Stack<Character>();

        String input = inputTextField.getText();

        StringTokenizer strToken = new StringTokenizer(input, " ", false);


        while (strToken.hasMoreTokens())
        {
            String i = strToken.nextToken();
            int operand;
            char operator;

            try
            {
                operand = Integer.parseInt(i);
                operandStack.push(operand);
            }
            catch (NumberFormatException nfe)
            {
                operator = i.charAt(0);
                operatorStack.push(operator);
            }
        }
        int result = sum (operandStack, operatorStack);
        resultTextField.setText(result);

最后一行内容为:“resultTextField.setText(result);”在提供的代码中，我试图将“结果”变量转换为字符串，但没有成功。我得到的编译错误消息是:

PrefixExpression.java:96: error: method setText in class JTextComponent cannot be applied to given types;          resultTextField.setText(result);                         ^  required: String  found: int  reason: actual argument int cannot be converted to String by method invocation conversion.

我已经尝试了此处提供的其他“将 int 转换为字符串”问题的答案中提供的几种方法，但它们都不起作用。如何将“结果”转换为字符串？感谢您的帮助。

Answer 1

这会将 int 转换为字符串:

resultTextField.setText(Integer.toString(result));

编辑:如下所述，无需导入 java.lang，因为它始终可用。