2020年度石化盈科笔试题.doc

.lassEncapsulation{classClassValue{ publicinti=15;} publicstaticvoidmain(String[]args){ //TODOAuto-generatedmethodstub Encapsulationt=newEncapsulation(); (); } publicvoidfirst(){ ClassValuecv=newClassValue(); second(cv); (":"+); } publicvoidsecond(ClassValuev){ ClassValuecv=newClassValue(); =25; v=cv; (":"+); }}classA{ publicvoidshow(){ ("classashow"); }}classBextendsA{ publicvoidshow(){ ("classashow"); }}lassInherit{ /** ****@paramargs */ publicstaticvoidmain(String[]args){ Aa=newB(); if(ainstanceofA){ ("A"); } if(ainstanceofB){ ("B"); } }}lassPolymorphic{ /** ****@paramargs */ publicstaticvoidmain(String[]args){ //TODOAuto-generatedmethodstub Parentpare=newSub(); (); }}classParent{ publicvoidshow(){ ("classParentshow"); }}classSubextendsParent{ publicvoidshow(){ ("classSubshow"); }}lasstryCatch{ /** ****@paramargs */ publicstaticvoidmain(String[]args){ try{ ("begin"); ("end"); return; }catch(Exceptione){ ("excepton"); }finally{ ("finally"); } }}lassMySort{ publicstaticvoidmain(String[]args){ MySortsort=newMySort(); int[]arr=newint[]{3,22,11,5,400,99,20,22,5}; (arr); for(inti:arr){ (i+","); } } publicvoidsort(int[]targetArr){//小到大的排序 inttemp=0; for(inti=0;i<;i++){ for(i