为什么我的程序在检查java中的第二个条件之前终止
我试图编写一个有条件的程序，并针对3门课程提出以下问题：为什么我的程序在检查java中的第二个条件之前终止,java,Java,我试图编写一个有条件的程序，并针对3门课程提出以下问题： 这门课叫什么名字 这门课程招收了多少学生 本课程的学生能力是多少 第三门课的期末考试日期是什么时候 条件是课程2的期末考试日期不能与课程1的期末考试日期相同，课程3的期末考试日期不能与课程1或课程2相同。它检查课程1，但在检查课程2之前终止 代码如下： import java.util.Scanner; public class CourseTest2 { public static void main(String[] ar
import java.util.Scanner;
public class CourseTest2 {
public static void main(String[] args) {
Scanner scanoption = new Scanner(System.in);
Scanner in = new Scanner(System. in);
String name1;
int enroll1;
int cap1;
String final1;
String answer;
//This is for the first course
System.out.println("What is the name of the course?");
name1 = in. nextLine();
System.out.println("How many students are enrolled in the course?");
enroll1 = in. nextInt();
System.out.println("What is student capacity for this course?");
cap1 = in. nextInt(); in.nextLine();
while (enroll1 > cap1)
{
System.out.println("Amount of Enrolled Students cannot exceed Student Capacity.Press Enter");
in.nextLine();
System.out.println("How many students are enrolled in the course?");
enroll1 = in. nextInt();
System.out.println("What is student capacity for this course?");
cap1 = in. nextInt(); in.nextLine();
}
System.out.println("When is the final exam date for this course?");
final1 = in. nextLine();
Course course1 = new Course (name1);
System.out.println("Do you want to add another course? (Y/N)"); // this is to repeat the questions so the use can enter information for the next class obejct
answer = in.nextLine();
course1.setName(name1);
course1.setEnrolledStudentNum(enroll1);
course1.setFinalExamDate(final1);
//2nd Course Object
String name2;
int enroll2;
int cap2;
String final2;
switch (answer)
{
case "Y":
case "y": System.out.println("What is the name of the second course?");
name2 = in. nextLine();
System.out.println("How many students are enrolled in the course?");
enroll2 = in. nextInt();
System.out.println("What is student capacity for this course?");
cap2 = in. nextInt();in.nextLine();
while (enroll2 > cap2)
{
System.out.println("Amount of Enrolled Students cannot exceed Student Capacity.Press Enter");
in.nextLine();
System.out.println("How many students are enrolled in the course?");
enroll2 = in. nextInt();
System.out.println("What is student capacity for this course?");
cap2 = in. nextInt(); in.nextLine();
}
do
{
System.out.println("When is the final exam date for this course?");
final2 = in. nextLine();
}
while ( final2 == final1);
{
System.out.println("Final Exam Date for Second Course cannot be the same as the first course. Press enter and try again");
in.nextLine();
System.out.println("When is the final exam date for this course?");
final2 = in. nextLine();
}
Course course2 = new Course (name2);
System.out.println("Do you want to add another course? (Y/N)");// this is to repeat the questions so the use can enter information for the next class obejct
answer = in.nextLine();
course2.setName(name2);
course2.setEnrolledStudentNum(enroll2);
course2.setFinalExamDate(final2);
break;
case "N":
case "n":System.exit(0);
break;
default :
System.out.println("invalid choice") ;
break;
}
//3rd Class Object
String final3 = null;
switch (answer)
{
case "Y":
case "y": System.out.println("What is the name of the third course?");
String name3 = in. nextLine();
System.out.println("How many students are enrolled in the course?");
int enroll3 = in. nextInt();
System.out.println("What is student capacity for this course?");
int cap3 = in. nextInt();in.nextLine();
while (enroll3 > cap3)
{
System.out.println("Amount of Enrolled Students cannot exceed Student Capacity. Press Enter");
in.nextLine();
System.out.println("How many students are enrolled in the course?");
enroll3 = in. nextInt();
System.out.println("What is student capacity for this course?");
cap3 = in. nextInt(); in.nextLine();
}
do
{
System.out.println("When is the final exam date for the third course?");
final3 = in. nextLine();
}
while ( final3 == final1 && final3 == final2);
{
System.out.println("Final Exam Date for third Course cannot be the same as the first or second course. Press enter and try again");
in.nextLine();
System.out.println("When is the final exam date for this course?");
final3 = in. nextLine();
in.nextLine();
}
Course course3 = new Course (name3);
course3.setName(name3);
course3.setEnrolledStudentNum(enroll3);
course3.setFinalExamDate(final3); `
但在用户按下enter键后，它就会终止。我建议您开设一门课程
public class Course {
private String name;
private int capacity;
private int enrollment;
private Date finalExamDate;
// You add the rest.
}
CourseCatalog列表while ( final3 == final1 && final3 == final2);
while ( final3 == final1 || final3 == final2);
也就是说，我想这是为你要上的课准备的。我会给你一些建议。利用上面代码中已经演示的知识，这一切都可以以更简单、更清晰的方式完成。您只需要更多地考虑如何更有效地使用循环和类来实现您的目标。请遵循eclipse中的调试文档 步骤1 在代码中添加断点 步骤2
作为java应用程序进行调试并逐个检查这是因为java的短路评估。检查相关答案学生的经典错误：代码太多，分解不良。编写可以通过向其传递数据进行测试的小方法。不要重复你自己-干燥原则。保持与用户的交互完全分开。嗨。现在是学习如何调试的好时机。如果您没有使用诸如Eclipse之类的IDE（集成开发环境），则应该。这是一个教程。还可以看看我在使用eclipse。此外，第二和第三门课的问题应该重复。我尝试了你给我@Mark的链接中的建议，但这只会使第二门课不起作用，而在它起作用之前，我只是第三门课不起作用。当我按照你的建议做游戏时，这是“预期的”error@Idara对不起，你是对的。把它放回去lol我不记得上次我做了一个do，而代码在课程1和课程2中完美地工作，当我在期末考试日期第二次错误尝试后为课程3做时，它终止了。你遵循调试链接了吗？或者你知道如何添加断点吗？这是我第一次使用eclipse，所以我无法理解它。我想了解有关向下投票的解释，请提供任何关于如何压缩的建议，我们将不胜感激。这是stackoverflow中的第一个问题，所以不要担心。阅读指南在你发布的代码中看不到它。太多东西-一个坏迹象。你看到的代码是驱动程序类而不是类课程。我需要帮助的代码是driver class@duffymo