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3、nSystem.out.println(請輸入年份和月份，輸入一次按一次回車 x= y= a=char= for( System.out.printf(%7cfor( i=0;ia.lengthifSystem.outSystem.out.printf(%4s day; =0, = SetYear( this. SetMonth( .this. = a= =Calendar.getInstancerill.set(year, month =rill.get(Calendar.DAY_OF_WEEK if(month=1|=3|=7|=8|=10|if( 4| 6| 9| =if( if(yea

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5、部非數字字符，例如，將形如“abc123you”的非數字字符全部剔除得到字符串“123 = D1,;p=Ppiles= abc123you;m=System.out.println(剔除以后的字符串=m.replaceAll(System.out10921Scanner877696 . = 8776分，英語96分;= scanner.useDelimiter(0123456789+ =while = =System. .println(+sum+101如果準備按字節讀取一個文件的內容，應當使用FileInputStreamFileReader102FileInputStreamreadFile

6、Reader流的read103BufferedReaderBufferedReaderReader子類的對象，來創建一個104ObjectInputStreamObjectOutputStreamObjectOutputStreamOutputStream的子類創建一個輸出流。同樣ObjectInputStreamInputStream105106RandomAccessFile = null;. = RandomAccessFile(tom.dat,rwfor( i=0;idata.lengthfor( i=data.lengthSystem. .printf(t%dcatch107java108略1092567/臺3562/臺6573/臺 = File(cost