Question

我正在尝试为成绩报告编制表格，该报告应包含5列，分别是“类别”，“说明”，“单位”，“成绩”和“成绩点”。但是，我无法使输出彼此对齐。我只是使用“ \ t”。有没有办法在Java中将输出制成表格？

import java.util.*;
public class Project1_Trial2 {
    public static void main(String args[])
    {
        Scanner scanner = new Scanner(System.in);

        //Input the term
        System.out.println("Please enter the term of your grade calculation (for example, Fall 2015): ");
        String term = scanner.nextLine();

        //Input the number of courses that the student is enrolled in
        System.out.println("Please enter the number of courses that you are enrolled in "+term+": ");
        int numberofcourses = scanner.nextInt();

        //Declaration
        String ClassName[] = new String[numberofcourses];
        String Description[] = new String[numberofcourses];
        String Grade[] = new String[numberofcourses];
        int Units[] = new int[numberofcourses];

        //Arrays for class number, description, units, grade, grades point
        //Here, input class number, description, units, and grades
        for(int i = 0; i < numberofcourses; i++)
        {
            scanner.nextLine();
            System.out.println("Please enter your #"+(i+1)+" class name: ");
            ClassName[i] = scanner.nextLine();
            System.out.println("Please enter your #"+(i+1)+" class description: ");
            Description[i] = scanner.nextLine();
            System.out.println("Please enter your #"+(i+1)+" class units: ");
            Units [i] = scanner.nextInt();
            System.out.println("Please enter your #"+(i+1)+" class grade: ");
            Grade[i] = scanner.nextLine();
        }

        System.out.println("Class Grades - "+term+" Term");
        System.out.println("Office Grades");
        System.out.println("Class \t \t Description \t \t Units \t \t Grade \t \t Grade Points");
        for(int i = 0; i < numberofcourses; i++)
        {
        System.out.println(ClassName[i]+"\t \t"+Description[i]+"\t \t"+Units[i]+"\t \t"+Grade[i]);
        }
    }
}

Answer 1

有多种方法可以对齐输出，以便它们均匀对齐。...一种方法是替换放置位置：

System.out.println(ClassName[i]+"\t \t"+Description[i]+"\t \t"+Units[i]+"\t \t"+Grade[i]);

具有：

System.out.printf("%-15s %-15s %-15s ",ClassName[i],Description[i],String.format("%5d", Units[i]),Grade[i]);

代替使用System.out.println()，而是使用System.out.printf()来填充字符串，并在String.format()函数内部使用printf()来用空格填充整数...您可以调整我的填充物以适合您的感觉这是一种更有效的方法，而不是经常使用标签页

如何在Java中将输出格式化为表格？

1 个答案: