【发布时间】:2016-02-24 03:29:01
【问题描述】:
亲爱的java爱好者,
我想在 eclipse 的帮助下将我的 java 程序变成一个可执行的 .jar 文件。我导出到一个 .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去做我找不到它。
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.");
}}
【问题讨论】:
标签: java file jar makefile executable