ch4_e4_9.java

《java语言与面向对象程序设计题解及实验指导》源代码

public class ch4_e4_9
{
public static void main(String args[])
{
Student demoStudent = new Student("008",892,'m',"张散",19);

System.out.println(demoStudent.toString());
}
}


class Student
{
private String studentId;
private int classId;
private String studentName;
private char studentGender;
private int studentAge;

String getStudentId()
{
return studentId;
}

int getClassId()
{
return classId;
}

char getStudentGender()
{
return studentGender;
}

String getStudentName()
{
return studentName;
}

int getStudentAge()
{
return studentAge;
}

boolean setStudentAge(int newAge)
{
if( newAge>0 && newAge<130)
{
studentAge = newAge;
return true;
}
else
{
System.out.println("非法学生年龄！");
return false;
}
}

Student(String id, int clsId, char gender, String name, int age)
{
studentId = id;
//studentId = new String(id);
classId = clsId;
studentName = new String(name);
studentAge = age;
studentGender = gender;
}

public String toString()
{
return "学生信息：\n"
+ "学号  " + this.getStudentId()
+ "\t班号  " + this.getClassId()
+ "\t姓名  " + this.getStudentName() 
+ "\t性别  " 
+ ((this.getStudentGender()) == 'm' ? "男" : "女")
+ "\t年龄  " + this.getStudentAge();
}
}