Possible Duplicate: Converting string to int in java I am trying to write a method that returns an int from a String variable. My method is: public int returnInt(String s) { } 你可以使用Integer.valueOf(String)来做到这一点
可能重复: 在java中将字符串转换为int 我正在尝试编写一个从String变量返回int的方法。 我的方法是: public int returnInt(String s) { } 你可以使用Integer.valueOf(String)来做到这一点
This question already has an answer here: How do I convert a String to an int in Java? 30 answers If this is what you got so far: InputStream letturaEasy = getResources().openRawResource(R.raw.max_easy); Then all that needs to be done is to convert that to a String : String result = getStringFromInputStream(letturaEasy); And finally, to int : int num = Integer.parseInt(result); By the
这个问题在这里已经有了答案: 如何在Java中将字符串转换为int? 30个答案 如果这是你到目前为止: InputStream letturaEasy = getResources().openRawResource(R.raw.max_easy); 然后,所有需要做的就是将其转换为字符串 : String result = getStringFromInputStream(letturaEasy); 最后,以int : int num = Integer.parseInt(result); 顺便说一下, getStringFromInputStream()在这里被实现: private static Str
This question already has an answer here: How do I convert a String to an int in Java? 30 answers 您需要将sc.nextLine转换为int Scanner sc = new Scanner(new File("temperatur.txt")); int[] temp = new int [12]; int counter = 0; while (sc.hasNextLine()) { String line = sc.nextLine(); temp[counter] = Integer.ParseInt(line); counter++; }
这个问题在这里已经有了答案: 如何在Java中将字符串转换为int? 30个答案 您需要将sc.nextLine转换为int Scanner sc = new Scanner(new File("temperatur.txt")); int[] temp = new int [12]; int counter = 0; while (sc.hasNextLine()) { String line = sc.nextLine(); temp[counter] = Integer.ParseInt(line); counter++; } int sum = 0;
This question already has an answer here: How do I convert a String to an int in Java? 30 answers How to do an Integer.parseInt() for a decimal number? 9 answers What about: int i = (int) Double.parseDouble(s); Of course, "20.00" is not in a valid integer format. String s = "20.00"; is not valid Integer value that is the reason its throwing NumberFormatException
这个问题在这里已经有了答案: 如何在Java中将字符串转换为int? 30个答案 如何做一个十进制数的Integer.parseInt()? 9个答案 关于什么: int i = (int) Double.parseDouble(s); 当然, "20.00"不是有效的整数格式。 String s =“20.00”; 不是有效的Integer值,它是抛出NumberFormatException的原因。 使用Double或Float格式化您的电话号码,然后使用窄电影将您的电话号码转换为int但如果存在,您可
Possible Duplicate: How to convert string to int in Java? MY code is supposed to read strings and then take the corresponding actions, but if that string is a line of numbers i need this line as a full number (an int) not as a string anymore.can this be done? Use Integer.valueOf: int i = Integer.valueOf(someString); (There are other options as well.) Look at the static method Integer.pa
可能重复: 如何在Java中将字符串转换为int? 我的代码应该是读取字符串,然后采取相应的行动,但如果该字符串是一行数字,我需要这行作为一个完整的数字(一个int)而不是一个字符串anymore.c能做到这一点? 使用Integer.valueOf: int i = Integer.valueOf(someString); (还有其他选项。) 看一下静态方法Integer.parseInt(String string) 。 此方法过载,并且还能够读取除十进制系统之外的其他数字系统中的值。
This question already has an answer here: How do I convert a String to an int in Java? 30 answers You can use Integer.valueOf() or Integer.parseInt(); unless there's more to your question that would be something like this - public static void main(String[] args) { String str = "1"; int a = Integer.valueOf(str); // java.lang.Integer return(ed) int b = Integer.parse
这个问题在这里已经有了答案: 如何在Java中将字符串转换为int? 30个答案 您可以使用Integer.valueOf()或Integer.parseInt(); 除非你的问题更像是这样 - public static void main(String[] args) { String str = "1"; int a = Integer.valueOf(str); // java.lang.Integer return(ed) int b = Integer.parseInt(str); // primitive (int) return(ed) System.out.printf("a =
Possible Duplicate: How to convert string to int in Java? I am trying to figure out how to convert a string that has integers in it to an integer variable. Code: import java.util.Scanner; public class main { public static void main(String args[]) { Scanner input = new Scanner(System.in); System.out.println("Enter date of birth (MM/DD/YYYY):"); String DOB = inpu
可能重复: 如何在Java中将字符串转换为int? 我想弄清楚如何将其中有整数的字符串转换为整型变量。 码: import java.util.Scanner; public class main { public static void main(String args[]) { Scanner input = new Scanner(System.in); System.out.println("Enter date of birth (MM/DD/YYYY):"); String DOB = input.next(); String month = DOB.substring(0, 1); S
This question already has an answer here: How do I convert a String to an int in Java? 30 answers Here's the way I prefer to do it: Edit (08/04/2015): As noted in the comment below, this is actually better done like this: String numStr = "123"; int num = Integer.parseInt(numStr); An Integer can't hold that value. 6042076399 (413424640921 in decimal) is greater than 2147483647,
这个问题在这里已经有了答案: 如何在Java中将字符串转换为int? 30个答案 这是我喜欢做的方式: 编辑(08/04/2015): 正如下面的评论所指出的那样,实际上这样做更好: String numStr = "123"; int num = Integer.parseInt(numStr); Integer不能保存该值。 6042076399(十进制中的413424640921)大于2147483647,整数可以保持的最大值。 尝试使用Long.parseLong 。 这是正确的方法,但是你的值大于int的最大值
This question already has an answer here: How do I convert a String to an int in Java? 30 answers Use Wrapper Class. Examples are below int int a = Integer.parseInt("1"); // Outputs 1 float float a = Float.parseFloat("1"); // Outputs 1.0 double double a = Double.parseFloat("1"); // Outputs 1.0 long long a = Long.parseLong("1"); // Outputs 1 int one = Integer.parseInt("1"); 理想情
这个问题在这里已经有了答案: 如何在Java中将字符串转换为int? 30个答案 使用包装类。 示例如下 INT int a = Integer.parseInt("1"); // Outputs 1 浮动 float a = Float.parseFloat("1"); // Outputs 1.0 双 double a = Double.parseFloat("1"); // Outputs 1.0 长 long a = Long.parseLong("1"); // Outputs 1 int one = Integer.parseInt("1"); 理想情况下,你也应该捕捉错误: int i; String s = "might no
Coming from Perl, I sure am missing the "here-document" means of creating a multi-line string in source code: $string = <<"EOF" # create a three line string text text text EOF In Java I have to have cumbersome quotes and plus signs on every line as I concatenate my multiline string from scratch. What are some better alternatives? Define my string in a properties file? Edit
来自Perl,我确定缺少在源代码中创建多行字符串的“here-document”方法: $string = <<"EOF" # create a three line string text text text EOF 在Java中,我必须在每行都有繁琐的引号和加号,因为我从头开始连接多行字符串。 有什么更好的选择? 在属性文件中定义我的字符串? 编辑 :两个答案说StringBuilder.append()比加表示法更可取。 有谁能详细说明他们为什么这么想吗? 对我来说,这看起来并不比我更喜