shape st[][]=new shape[3][2]; shape st[0][0]=new circle(2); shape st[0][1]=new circle(4);为什么不对?

shape st[][]=new shape[3][2]; shape st[0][0]=new circle(2); shape st[0][1]=new circle(4);为什么不对? Shape shape = new Shape()是什么意思 shape=rectangle什么意思 请高手能够解释下这段程序每行的大致意思public class Test {public static void main(String[] args){Student st=new Student(张,男,123456);st.setEnglish(91);st.setMath(96);st.setComputer(98);st.Total();st.Average();System.out.print New Years Day is on January 1st.改错 jan.1st is new year's day. New China__________（成立）on October 1st,1949. “71 st brooklyn new york 11204”；11204表示什么意思? St. ST. 有一款seiko的情侣表,后面写着sha st steel back 610800 7430-5050 japan 有谁能告诉我大概价格, National Day(国庆节）和National Day（圣诞节）的简写形式要求用【New year‘s Day=Jan 1*st is the New=The first of Jan is the New 3D max 怎麽默认取消他选择 start New Shape October 1st is Chinese National Day.(改为同义句)October 1st is the _____ of New _____. 连一连 The New Year' s Day is on January 1 st Christmas' s Day is on June 1 st new port r coming from 21 st ostober i m moving from china on 21 st octob v=st的意思 shape=rect表示的形状是什么；shape=poly表示的形状是什么.注意是在Area的shape属性中