亲爱的java爱好者,
我想在eclipse的帮助下将我的java程序变成可执行的.jar文件。我导出到.jar文件但是当我双击它时它似乎不起作用?我想我错过了一些东西,但经过一段时间试图找到如何做到这一点我无法找到它。
有什么建议吗?
import java.util.Scanner;
public class GravityMoon {
public static void main(String[] args) {
System.out.println("Please enter your earthweight in kilograms below:");
Scanner earthweight = new Scanner(System.in);
// Repeat until next item is a double
while (!earthweight.hasNextDouble())
{
// Read and discard offending non-double input
earthweight.next();
// Re-prompt
System.out.print("Please enter your earthweight "
+ "in numerical kilograms: ");
}
double moonweight;
// Converts earthweight in moonweight 17%
moonweight = earthweight.nextDouble() * 0.17;
// convert to whole numbers
//closes keyboard input
earthweight.close();
//prints out your moonweight in a decimal number
System.out.println("Your moonweight is " + Math.round(moonweight * 100d) /100d
+ " kilograms.");
}}
答案 0 :(得分:0)
因为你没有解释确切的问题,我可能只会给出提示:
导出为可执行文件夹
在Eclipse中,可以选择导出到jar文件和导出到可执行jar文件的另一个选项(参见http://help.eclipse.org/mars/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Ftasks%2Ftasks-37.htm)。
(我猜你正在使用windows)尝试从控制台执行jar文件(比如java -jar)。
双击Windows中的jar文件不会打开终端窗口。