java中如何以左对齐、右对齐和居中对齐字符串打印输出？

实现思路:
    1.借助printf(String format, Object... args)输出指定占位符的信息
	2.借助 StringUtils 工具类处理（需引入相应的jar包）

package com.java265;
import org.apache.commons.lang3.StringUtils;
import java.time.LocalDate;
import java.time.Month;
import java.time.temporal.ChronoUnit;

public class StringAlignment {
    private static final Object[][] people = {
            {"adeal", LocalDate.of(2021, Month.JANUARY, 1)},
            {"java", LocalDate.of(2020, Month.DECEMBER, 8)},
            {"ado.net", LocalDate.of(1998, Month.JULY, 9)},
            {"cSharp", LocalDate.of(2003, Month.MARCH, 23)},
    };

    public static void main(String[] args) {
        String nameFormat = "| %1$-20s | ";
        String dateFormat = " %2$tb %2$td, %2$tY  | ";
        String ageFormat = " %3$3s |%n";
        String format = nameFormat.concat(dateFormat).concat(ageFormat);
        String line = new String(new char[48]).replace('\0', '-');

        System.out.println(line);
        System.out.printf("|%s|%s|%s|%n",
                StringUtils.center("Name", 22),
                StringUtils.center("Birth Date", 16),
                StringUtils.center("Age", 6));
        System.out.println(line);

        for (Object[] data : people) {
            System.out.printf(format,
                    data[0], data[1],
                    ChronoUnit.YEARS.between((LocalDate) data[1], LocalDate.now()));
        }

        System.out.println(line);
    }
}