文档介绍：下面代码的输出结果是:lassMain{publicstaticvoidmain(String[]args){intn=100;intm=200;(f(n,m));(n);}publicstaticintf(intm,intn){n=m+n;returnn;}}:lassTest{publicstaticvoidmain(String[]args){intx=6;Testp=newTest();(x);("main:x="+x);}voiddoStuff(intx){("doStuff:x="+x++);}}doStuff:x=7main:x=:x=7main:x=:x=6main:x=:x=6main:x=::lassTest{publicvoidprint(charc){("c");}publicvoidprint(inti){("i");}publicvoidprint(doubled){("d");}publicvoidprint(Strings){("s");}publicstaticvoidmain(String[]args){Testtest=newTest();('5');}}:lassTest{Stringname="Tom";publicTest(Stringname){name=name;}publicstaticvoidmain(String[]args){Testt=newTest("Jack");();}}."",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:"+);}}::::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