student.java

还不错的java基本实例

package ch5;
import java.text.NumberFormat;
public class Student {
	private String name;
	double [] scores;
	public Student(String aName,double ... aScores){
		name=aName;
		scores=aScores;	
	}
	public String toString(){
		String output=name;
		 NumberFormat formatter=NumberFormat.getNumberInstance();
         formatter.setMaximumFractionDigits(1);
		double sum=0;
		if(scores!=null) {
		for(double score :  scores)
			sum+=score;
		double average=sum/scores.length;	
		return output+":  "+formatter.format(average);
		}
		else
			return  output+":  "+"没有成绩";		
	}
}