staticinnerclass.java

java的接口和内部类例子

/**
 * 静态内部类的测试
 */
 
import java.util.Vector;

public class StaticInnerClass
{
	public static void main(String[] args)
	{
		Vector vec = new Vector();
		
		Student tom = new Student("Tom","20020410");
		Student jack = new Student("Jack","20020411");
		Student smith = new Student("Smith","20020412");
		Student rose = new Student("Rose", "20020413");
		tom.setStudentScore(456);
		jack.setStudentScore(500);
		smith.setStudentScore(634);
		rose.setStudentScore(414);
		
		vec.add(tom);
		vec.add(jack);
		vec.add(smith);
		vec.add(rose);
		
		ArrayScore.PairScore pair = ArrayScore.minMax(vec);
		System.out.println("最高分数为：" + pair.getMaxScore());
		System.out.println("最低分数为：" + pair.getMinScore());
		
	}
}

class ArrayScore
{
	static class PairScore
	{
		private double maxScore;
		private double minScore;
	
		public PairScore(double max, double min)
		{
			maxScore = max;
			minScore = min;
		}
	
		public double getMaxScore()
		{
			return maxScore;
		}
	
		public double getMinScore()
		{
			return minScore;
		}

	}
	
	public static PairScore minMax(Vector studentVec)
	{
		double minScore = ((Student)studentVec.get(0)).getStudentScore();
		double maxScore = ((Student)studentVec.get(0)).getStudentScore();
		
		for(int i = 1; i < studentVec.size(); i++)
		{
			double score = ((Student)studentVec.get(i)).getStudentScore();
			if(minScore > score)
				minScore = score;
			
			if(maxScore < score)
				maxScore = score;
		}
		
		return new PairScore(maxScore, minScore);
	}
}

/**
 * 我们设计的学生基本类
 */
class Student
{
	private String strName = "";//学生姓名
	private String strNumber = "";//学号
	private String strSex = "";//性别
	private String strBirthday = "";//出生年月
	private String strSpeciality = "";//专业
	private String strAddress = "";//地址
	private double totalScore;//学生的总分数
	
	public Student(String name, String number)
	{
		strName = name;
		strNumber = number;
	}

	public String getStudentName()
	{
		return strName;
	}

	public String getStudentNumber()
	{
		return strNumber;
	}

	public void setStudentSex(String sex)
	{
		strSex = sex;
	}

	public String getStudentSex()
	{
		return strSex;
	}

	public String getStudentBirthday()
	{
		return strBirthday;
	}

	public void setStudentBirthday(String birthday)
	{
		strBirthday = birthday;
	}

	public String getStudentSpeciality()
	{
		return strSpeciality;
	}

	public void setStudentSpeciality(String speciality)
	{
		strSpeciality = speciality;
	}

	public String getStudentAddress()
	{
		return strAddress;
	}

	public void setStudentAddress(String address)
	{
		strAddress = address;
	}
	
	public double getStudentScore()
	{
		return totalScore;
	}
	
	public void setStudentScore(double score)
	{
		totalScore = score;
	}

	public String toString()
	{
		String information = "学生姓名=" + strName + ", 学号=" + strNumber;  
		if( !strSex.equals("") )
			information += ", 性别=" + strSex;
		if( !strBirthday.equals(""))
			information += ", 出生年月=" + strBirthday;
		if( !strSpeciality.equals("") )
			information += ", 专业=" + strSpeciality;
		if( !strAddress.equals("") )
			information += ", 籍贯=" + strAddress;
		return information;
	}
}