Java面向?qū)ο蟪绦蛟O(shè)計試題一答案

1、Java面向?qū)ο蟪绦蛟O(shè)計試題一答案一、單項選擇題：選擇第1題：B選擇第2題：A選擇第3題：C選擇第4題：B選擇第5題：A選擇第6題：A選擇第7題：B選擇第8題：C選擇第9題：B選擇第10題：B二、多項選擇題多項選擇第1題：AB多項選擇第2題：BD多項選擇第3題：AD多項選擇第4題：AD多項選擇第5題：BCD多項選擇第6題：AB多項選擇第7題：ABCD多項選擇第8題：ABCD多項選擇第9題：BC多項選擇第10題：BC三、 填空題答案 填空第1題：x=10,a=3,b=4,c=5填空第2題：java.util填空第3題：(public (static (void(main(String args填

2、空第4題：1填空第5題：26 四、 編程題答案1public class HelloWorldpublic static void main(String argspublic class HelloWorld extends AppletString s;public void init(s="Hello World!"public void paint(Graphics gg.drawString(s,25,25;2class yanghuipublic static void main (String argsint i,j;int yhlevel=10;int ya

3、nghui;yanghui=new intyhlevel;for(i=0;i yanghuii=new inti+1;yanghui00=1;for (i=1; i yanghuii0=1;for(j=1;j yanghuiij=yanghuii-1j-1+yanghuii-1j;yanghuiiyanghuii.length-1=1;for (i=0; i for(j=0;j 輸出結(jié)果是：楊暉三角形:1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 1 6 15 20 15 6 1 1 7 21 35 35 21 7 1 1 8 28 56 70 56

4、28 8 1 1 9 36 84 126 126 84 36 9 13public class MemoControllerFileOutputStream fos;OutputStreamWriter osw;BufferedWriter bw;public MemoController(tryfos=new FileOutputStream("memo.txt",true; osw=new OutputStreamWriter(fos;bw=new BufferedWriter(osw;catch(FileNotFoundException e;public synch

5、ronized void append(String strybw.write(s,0,s.length(; bw.flush(;bw.close(;osw.close(;fos.close(;catch(IOException epublic static void main(String argsMemoController mmc=new MemoController(;mmc.append("I am xubin "4class Phones static FileOutputStream fos;public static final int lineLength

6、 = 81;public static void main(String args throws IOExceptionbyte phone = new bytelineLength;byte name = new bytelineLength;int I;try fos = new FileOutputStream("phone.numbers"catch(FileNotFoundException e while (truereadLine(name;if ("done".equalsIgnoreCase(new String(name,0,0,4b

7、reak; readLine(phone;for (int i=0;phonei!= 0;i+ fos.write(phonei;fos.write(','for (int i=0;namei!= 0;i+fos.write(namei; fos.write('n'fos.close(; private static void readLine(byte line throws IOException int i=0,b=0; while (i linei+ = (byteb; linei=(byte 0; 5、class ThreeTimeThread extends Threadpublic ThreeTimeThread(String str super(str;public void run( while (true Date currentTime = new Date(;try sleep(1000;catch (Exception e String dateString = formatter.format(currentTime; public static void main(String args throws Exceptionnew ThreeTimeT