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public class Text_classSelectRecord{

static int sr_i=0;

public static class SelectRecord{//创建类以模拟结构体 "选课记录"

private int id=0;

private boolean valid=false;

private String student=null;

private String book=null;

public int getId(){

return id;

}

public void setId(int i){

this.id=i;

}

public boolean getValid(){

return valid;

}

public void setValid(boolean p){

this.valid=p;

}

public String getStudent(){

return student;

}

public void setStudent(String stu){

this.student=stu;

}

public String getBook(){

return book;

}

public void setBook(String boo){

this.book=boo;

}

}//创建类以模拟结构体

//----------------------------------------------------------------------

//全局变量

static SelectRecord[] sr = new SelectRecord[50];

static SelectRecord s=new SelectRecord();

//----------------------------------------------------------------------

public static void main(String[] args){

s.setId(sr_i+1);

s.setValid(true);

s.setStudent("zhangsan");

s.setBook("java");

sr[sr_i]=s;

sr_i++;

System.out.println(sr[0].getStudent()+sr[0].getBook());

s.setId(sr_i+1);

s.setValid(true);

s.setStudent("lisi");

s.setBook("C++");

sr[sr_i]=s;

System.out.println(sr[0].getStudent()+sr[0].getBook());

System.out.println(sr[1].getStudent()+sr[1].getBook());

}

}

这段代码是能编译运行得通的，但是问题是输出的结果完全看不懂

cs