1、《Java《Java就業(yè)培訓(xùn)教程就業(yè)培訓(xùn)教程》P34》P34的JavaJava原代碼原代碼程序清單：Promote.javaclassPromotepublicstaticvoidmain(Stringargs[])byteb=50c=ashts=1024inti=50000floatf=5.67fdoubled=.1234doubleresult=(fb)(ic)(ds)System.out.println((fb)““(ic)““(

2、ds))System.out.println(“result=“result)《Java《Java就業(yè)培訓(xùn)教程就業(yè)培訓(xùn)教程》P35》P35的JavaJava原代碼原代碼程序清單：TestScope.javapublicclassTestScopepublicstaticvoidmain(String[]args)intx=12intq=96x和q都可用System.out.println(“xis“x)System.out.printl

3、n(“qis“q)q=x錯誤的行，只有x可用，q超出了作用域范圍System.out.println(“xis“x)《Java《Java就業(yè)培訓(xùn)教程就業(yè)培訓(xùn)教程》P37》P37的JavaJava原代碼原代碼程序清單：TestVar.javapublicclassTestVarpublicstaticvoidmain(String[]args)intx應(yīng)改為intx=0x=x1這個x由于沒有初始化，編譯會報錯。System.out.pri

4、ntln(“xis“x)publicstaticvoiddrawRectangle(intxinty)f(inti=0ixi)f(intj=0jyj)System.out.print(““)System.out.println()換行System.out.println()publicstaticvoidmain(String[]args)drawRectangle(35)drawRectangle(24)drawRectangle(6

5、10)《Java《Java就業(yè)培訓(xùn)教程就業(yè)培訓(xùn)教程》P40》P40的JavaJava原代碼原代碼程序清單：Func3.javapublicclassFunc3publicstaticintgetArea(intxinty)returnxypublicstaticvoidmain(String[]args)intarea=getArea(35)System.out.println(“firstAcreageis“area)System.o