字符串为点时无法解析

Question

我正在尝试转换String temp = 129.70为数字。我试过了：String decimalNumber= "-129.70";System.out.println(Integer.parseInt(decimalNumber));但这给了我例外 Exception in thread "main" java.lang.NumberFormatException: For input string: "-129.70"

Answer 1

129.70不是整数。这是双重的。换班，你应该没事。

System.out.println(Double.parseDouble(decimalNumber))

Answer 2

试试这个：

    String decimalNumber= "-129.70";
    System.out.println(Integer.parseDouble(decimalNumber));