public?class?HelloWorld?{
?
??static?String?clsssNum?=?"2班";

??static?double?avSum?=?0;

??static?int[]?cols?=?{67,78,98,56,88,34,89};

??public?static?int?avScore(){

??????for(int?i=0;?i<HelloWorld.cols.length;?i++){

????HelloWorld.avSum?+=?HelloWorld.cols[i];

???}

???return?(int)HelloWorld.avSum/HelloWorld.cols.length;

??}

??public?static?void?main(String[]?args){

???HelloWorld?test?=?new?HelloWorld();

???System.out.println(HelloWorld.clsssNum+"學(xué)生的平均成績是"+test.avScore());

??}

}