全国年月高等教育自学考试Java语言程序设计一试题课程代码

考试Java语言程序设计一试题课程代码在每小题列出的四个备选项中只有一个是符合题目要求的，请将其代码填写在题2.以下程序代码的输出结果是()while(x>7)A.**B.***C.*D.****U(inta,intb){x=a;y=b;}voidcopy(Ua){x=;y=;}}Uu=newU(1,2),v=newU(2,3);在以下供选择的代码中，可能引起系统回收内存的是()Stringsl="123"；Strings2="123"；Strings3=newString("123")；，true，false，false，true对象对象对象对象在这个方法中调用绘图方法，绘制各种图形。要重定义的方法是()t9.程序如果要按行输入输出文件的字符流，最合理的方法是采用()A存储查询结果B数据库的连接D序的加载和建立数据库连接的字节码文件的扩展名是_________。有子Strings="ABCDABCD"；B是_________。______对象分组，使同一组内的单选法恢复。两个端点分别是，和，。staticintsigmaDigit(intn)while(n>0){d=n%10;_________；n/=10;}_________；}import.*;import.*;classMyPanelextendsJPanel{publicvoidprint(Graphicsg,intx,inty)(;}}classMyWindowextendsJFrameimplementsMouseListener{finalintMaxMarks=20;intcurrentMarks=0,markCount=0;Pointmarks[]=newPoint[MaxMarks];MyPanelpanel;MyWindow(){Containercon=();elnewMyPanel}publicvoidpaintGraphicsg){for(i=0;i<markCount;i++){}}publicvoidmousePressed(MouseEvente){}publicvoidmouseReleased(MouseEvente){}publicvoidmouseEntered(MouseEvente){}publicvoidmouseExited(MouseEvente){}publicvoidmouseClickedMouseEvente){marks[currentMarks]=newPoint(),());arkscurrentMarksMaxMarks}}publicclassClass1extendsApplet{publicvoidinitMyWindowmyWndownewMyWindow();}}classMyWindowextendsJFrameimplementsItemListener{eldtextBoxboxlboxMyWindow(Strings){_________；Containercon=();ieldxaddItemListenerthis}publicvoiditemStateChanged_________e){if()==box1){}elseif()==box2){}}}intnummagemyImagenewnumpublicvoidpaint(Graphicsg){g____(myImage[currentImage],10,10,myImagecurrentImage.getWidth(this),myImagecurrentImagegetHeightthis),this);}publicclassClass1{publicstaticvoidmainStringargs{DatamrcnewShareDataThreadaThreadArraynewThread0];for(inti=0;i<20;i++){dArrayinewThreadnewMyMultiThreadClassmrcdArrayistart}WhileLoop:_________}}}classMyMultiThreadClassimplementsRunnable{DataUseIntegerintdeltaMyMultiThreadClass(ShareDatamrc,intd){UseInteger=mrc;delta=d;}publicvoidrun(){for(inti=0;i<1000;i++){classA{A(inta,intb){xay=b;}}publicclasssample{publicstaticvoidmain(Stringargs[]){Apl,p2;p2=newA(12,15);pp;++;}}staticvoidpascal(intn){pasnewintn];pas[0]=1;for(inti=2;i<=n;i++){pasil=1;forintji-2;j>0;j--)pas[j]=pas[j]+pas[j-1];forintjjij++)}}classMyPanelextendsJPanel{ButtonbuttonJLabellabelMyPanel(Strings1,Strings2){buttonnewJButtonslabel=newJLabel(s2,;addbuttonaddlabeladd(newJLabel());}}publicclassClass1{publicstaticvoidmain(Stringargs[]){JFramemwnewJFrame口");Containercon=();MyPanelpanel,panel2;lJButtonbuttonnewJButton);}}cclassClasspublicstaticvoidmain(Stringargs[]).}xtendsJFrameimplementsActionListenerFieldtextnewJTextFieldeashowAreanewJTextAreaelConnectNetStrings){PanejspnewJScrollPaneshowAreaetrue}publicvoidactionPerformedActionEvente){meeadmyThreadnullpublicvoidstart(){if(myThread==null){myThread=newThread(this);();}}publicvoidrun(){while(myThread!=null){ry}catch(InterruptedExceptione){}}}publicvoidpaint(Graphicsg){}}37.编写数组复制方法。该方法从已知平衡的两维数组的左下角复制出一个非平衡的publ