程序第六行在教育教学后面加空格结果为
全部图书：
    1.郁达夫随笔：伤感行旅    郁达夫    北京大学出版社    38.0
    2.教育教学              李晓燕     高等教育出版社    23.9
    3.普通化学原理与应用    比德勤    高等教育出版社    89.0
    4.机关工会工作指南    郭红梅    中国工人出版社    36.0
不加空格结果为
全部图书：
    1.郁达夫随笔：伤感行旅    郁达夫    北京大学出版社    38.0
    2.教育教学     李晓燕     高等教育出版社    23.9
    3.普通化学原理与应用    比德勤    高等教育出版社    89.0
    4.机关工会工作指南    郭红梅    中国工人出版社    36.0
求解为何教育教学作者显示不对齐，求解释下71至89行程序意思
public class lianxi16 {
    private Book[] booklist;
    lianxi16(){
        Book[]booklist={
                new Book("郁达夫随笔：伤感行旅","郁达夫","北京大学出版社",38.0f),//5行
                new Book("教育教学          ","李晓燕 ","高等教育出版社",23.9f),
                new Book("普通化学原理与应用","比德勤","高等教育出版社",89.0f),
                new Book("机关工会工作指南","郭红梅","中国工人出版社",36.0f)
        };
        this.booklist =booklist;
    }
    lianxi16(Book...book){
        booklist=book;
    }
    void getbookinfo(){
        System.out .println("全部图书：");
        for(int i=0;i<booklist.length ;i++){
            System.out .println("\t"+(i+1)+"."+booklist[i].title +
                                "\t"+booklist[i].author +
                                "\t"+booklist[i].publisher+
                                "\t"+booklist[i].price);
        }
    }
    void getbookinfo(float price){
        System.out .println("价格为“"+price+"”的图书：");
        int m=1;
        for(int i=0;i<booklist.length ;i++){
            if(booklist[i].price==price){
                System.out .println("\t"+m+"."+booklist[i].title +
                                    "\t"+booklist[i].author +
                                    "\t"+booklist[i].publisher);
                m++;
            }
        }
    }
    void getbookinfo(String publisher){
        System.out .println("出版社为“"+publisher+"”的图书：");
        int m=1;
        for(int i=1;i<booklist.length ;i++){
            if(booklist[i].publisher==publisher){
                System.out .println("\t"+m+"."+booklist[i].title +
                                    "\t"+booklist[i].author +
                                    "\t"+booklist[i].price);
                m++;
            }
        }
    }
    void getbookinfo(float price,String publisher){
        System.out .println("价格为“"+price+"”且出版社为“"+publisher+"”的图书：");
        int m=1;
        for(int i=0;i<booklist.length ;i++){
            if((booklist[i].price==price)&(booklist[i].publisher==publisher)){
                System.out .println("\t"+m+"."+booklist[i].title +
                                    "\t"+booklist[i].author );
                m++;
            }
        }
    }
    void getbookinfo(String publisher,float price){
        System.out .println("出版社为“"+publisher+"”且价格为“"+price+"”的图书：");
        int m=1;
        for(int i=0;i<booklist.length ;i++){
            if((booklist[i].publisher==publisher)&(booklist[i].price==price)){
                System.out .println("\t"+m+"."+booklist[i].title +
                                    "\t"+booklist[i].author );
                m++;
            }
        }
    }
    void getbookinfo(float...price){
        String s="";
        int m=1;
        for(float bookprice:price){
            s+=bookprice+" ";
        }
        System.out .println("价格为“"+s.trim()+"”的图书：");
        for(float bookprice:price){
            int i=0;
            while(i<booklist.length ){
                if(bookprice==booklist[i].price){
                    System.out .println("\t"+m+"."+booklist[i].title +
                                        "\t"+booklist[i].author +
                                        "\t"+booklist[i].publisher+
                                        "\t"+booklist[i].price);
                    m++;
                }
                i++;
            }
        }
        //void getbookinfo(float[]price){}
    }
    public static void main(String[]args){
        lianxi16 overloadtest=new lianxi16();
        overloadtest.getbookinfo();
        overloadtest.getbookinfo(36f);
        overloadtest.getbookinfo("高等教育出版社");
        overloadtest.getbookinfo(89f, "高等教育出版社");
        overloadtest.getbookinfo("北京大学出版社", 38f);
        overloadtest.getbookinfo(36f,23.9f,89f);
        overloadtest=null;
        overloadtest=new lianxi16(
                new Book("艺术批评学","陈汗青","北京大学出版社",28.0f),
                new Book("工程力学","范钦珊","高等教育出版社",71.0f)
                );
        overloadtest.getbookinfo();
    }

}
class Book{
    String title;
    String author;
    String publisher;
    float price;
    Book(String title,String author,String publisher,float price){
        this.title =title;
        this.author =author;
        this.publisher =publisher;
        this.price =price;
    }
}