import java.util.*;

public class Test {

    public static void main(String[] args) {
        List<Person> list = new ArrayList<Person>();
        list.add(new Person("alpha", "astreet", 12));
        list.add(new Person("bravo", "bstreet", 23));
        list.add(new Person("charlie", "cstreet", 34));
        list.add(new Person("delta", "dstreet", 45));

        System.out.println(String.format("%-10s%-10s%-10s", "Name", "Age", "Adress"));
        for (Person p : list)
            System.out.println(String.format("%-10s%-10s%-10d", p.name, p.addr, p.age));
    }
}

class Person {
    String name;
    String addr;
    int age;
    public Person(String name, String addr, int age) {
        this.name = name;
        this.addr = addr;
        this.age = age;
    }
}

输出：

Name      Age       Adress    
alpha     astreet   12        
bravo     bstreet   23        
charlie   cstreet   34        
delta     dstreet   45

使用带填充字段的printf实现列对齐。
具体为PrintWriter.printf

使用反射将Java对象打印为Markdown表的库：https://github.com/mjfryc/mjaron-etudes-java

dependencies {
  implementation 'io.github.mjfryc:mjaron-etudes-java:0.1.12'
}

import pl.mjaron.etudes;

class Cat {
    // ... any public fields or public getters here (JBean-like style).
}

class Sample {
    void sample() {
        List<Cat> cats = Arrays.asList(cat0, cat1);
        String table = Table.render(cats, Cat.class);
        System.out.println(table);
    }
}

样本输出：

| name | legsCount |  lazy | topSpeed |
| ---- | --------- | ----- | -------- |
| John |         4 |  true |    35.24 |
|  Bob |         5 | false |     75.0 |