有一种简单的方法可以在Java中将两列输出到控制台吗？

所需要的只是:

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;  

public class Columns {

    List> lines = new ArrayList<>();
    List maxLengths = new ArrayList<>();
    int numColumns = -1;

    public Columns addLine(String... line) {

        if (numColumns == -1){
            numColumns = line.length;
            for(int column = 0; column < numColumns; column++) {
                maxLengths.add(0);
            }
        }

        if (numColumns != line.length) {
            throw new IllegalArgumentException();
        }

        for(int column = 0; column < numColumns; column++) {
            int length = Math
                .max( 
                    maxLengths.get(column), 
                    line[column].length() 
                )
            ;
            maxLengths.set( column, length );
        }

        lines.add( Arrays.asList(line) );

        return this;
    }

    public void print(){
        System.out.println( toString() );
    }

    public String toString(){
        String result = "";
        for(List line : lines) {
            for(int i = 0; i < numColumns; i++) {
                result += pad( line.get(i), maxLengths.get(i) + 1 );                
            }
            result += System.lineSeparator();
        }
        return result;
    }

    private String pad(String word, int newLength){
        while (word.length() < newLength) {
            word += " ";            
        }       
        return word;
    }
}

由于它在拥有所有线条之前不会打印,因此可以了解制作列的宽度.无需硬编码宽度.