文档介绍：下面代码的输出结果是:lassMain{publicstaticvoidmain(String[]args){intn=100;intm=200;}publicstaticintf(intm,intn){n=m+n;returnn;}}300100100300程序执行的结果是:lassTest{publicstaticvoidmain(String[]args){intx=6;Testp=newTest();(x);"main:x="+x);}voiddoStuff(intx){"doStuff:x="+x++);}}doStuff:x=7main:x=7:x=7main:x=6:x=6main:x=7:x=6main:x=::lassTest{publicvoidprint(charc){"c");}publicvoidprint(inti){"i");}publicvoidprint(doubled){"d");}publicvoidprint(Strings){"s");}publicstaticvoidmain(String[]args){Testtest=newTest();('5');}}程序执行的结果是:lassTest{Stringname="Tom";publicTest(Stringname){name=name;}publicstaticvoidmain(String[]args){Testt=newTest("Jack");}}D."",下列说法错误的是:,下列说法正确的是:,不可多继承,,,:classFoo{publicinta;publicFoo(){a=3;}publicvoidaddFive(){a+=5;}}classBarextendsFoo{publicinta;publicBar(){a=8;}publicvoidaddFive(){+=5;}}lassTestFoo{publicstaticvoidmain(String[]args){Foofoo=newBar();();"Value:"+;}}:3:8:13:18下列代码编译和运行的结果是:classPerson{Stringname="Noname";publicPerson(Stringnm){name=nm;}}classEmployeeextendsPerson{StringempID="0000";publicEmployee(Stringid){empID=id;}}lassEmployeeTest{publicstaticvoidmain(String[]args){Employeee=newEmployee("4321");}}输出::(Stringid){行,:lassAnimal{publicStringnoise(){return"peep";}publicstaticvoidmain(String[]args){Animalanimal=newDog();Catcat=(Cat)animal;}}classDogextendsAnimal{publicStringnoise(){return"bark";}}classCatextendsAnimal{publicStringnoise(){return"meow";}}:lassA{publicvoidstart(){"TestA");}}lassBextendsA{publicvoidstart(){"TestB");}publicstaticvoidmain(String[]args){((A)newB()).start();}}::::classOne{voidfoo(){}}classTwoextendsOne{protectedv