《java編程語(yǔ)言原理與范例》課后實(shí)驗(yàn)源代碼

1、第一章實(shí)驗(yàn)一packagech01imptjava.text.SimpleDateFmatimptjava.util.DateclassTimerextendsThreadprivateSimpleDateFmatsdf=newSimpleDateFmat(“yyyy年MM月dd日HH:mm:ss“)publicvoidrun()while(true)System.out.print(“r現(xiàn)在時(shí)間是：“)Datenow=newDate(

2、)System.out.print(sdf.fmat(now))trysleep(1000)catch(InterruptedExceptione)e.printStackTrace()publicclassClockpublicstaticvoidmain(String[]args)Timertimer=newTimer()timer.start()實(shí)驗(yàn)二packagech01imptjava.awt.event.MouseAdapt

3、erimptjava.awt.event.MouseEventimptjava.util.Romimptjavax.swing.JButtonimptjavax.swing.JFramepublicclassMagicButtonextendsMouseAdapterJFramewinJButtonbutton=newJButton(“你點(diǎn)不到我“)Romr=newRom()第二章實(shí)驗(yàn)一2.交換兩個(gè)變量的值（不允許使用中間變量）。pac

4、kagech03publicclassExp2_2publicstaticvoidmain(String[]args)inta=2b=3ints=aba=sab=saSystem.out.println(“a=“a“b=“b)實(shí)驗(yàn)二3.逆序輸出一個(gè)7位整數(shù)，如8639427輸出為7249368（不允許使用循環(huán)語(yǔ)句）。packagech03publicclassExp2_3publicstaticvoidmain(String[]args

5、)longa=8639427System.out.print(a%10)System.out.print(a10%10)System.out.print(a100%10)System.out.print(a1000%10)System.out.print(a10000%10)System.out.print(a100000%10)System.out.print(a1000000%10)實(shí)驗(yàn)三4.對(duì)于int型變量a，以最快的速度計(jì)算34