對(duì)象數(shù)組?。。。。。。。。。。。?！
我想知道你們的父類子類是怎么寫(xiě)的 我總感覺(jué)自己寫(xiě)的不太對(duì)? ?main方法中用不了對(duì)象數(shù)組 會(huì)顯示錯(cuò)誤 求完整的父類子類 代碼? ！謝謝大佬
精慕門5041103
2018-09-27
2 回答
?對(duì)象數(shù)組定義完了之后還要實(shí)例化的，數(shù)組保存的是類名引用，并沒(méi)有分配對(duì)象空間，你先試試遍歷賦一遍初始值
0
舉報(bào)
0/150
提交
取消
2018-09-29
package?BorrowMain;import?BorrowClass.Bus;import?BorrowClass.Car;import?BorrowClass.Train;import?BorrowClass.kaCar;public?class?borrow?{Train[]?motos=new?Train[11];public?void?init(){ motos[0]=new?Car("京NY28588","寶馬",800,"X6"); motos[1]=new?Bus("京6566754","金杯",800,16); motos[2]=new?Car("京CNY3284","寶馬",600,"550i"); motos[3]=new?Bus("京8696997","金龍",800,16); motos[4]=new?Car("京NT37465","別克",300,"林蔭大道"); motos[5]=new?Bus("京6566754","金杯",1500,34); motos[6]=new?Car("京NT96968","別克",600,"GL8"); motos[7]=new?Bus("京8696998","金龍",1500,34); motos[8]=new?kaCar("贛A06E37","killerqueen",0,15); motos[9]=new?kaCar("贛A77777","公路殺手",0,20); motos[10]=new?kaCar("贛GA4396","水泥明星",0,20);}}