public static void main(String[]args){Integer i=new Integer(1)+new Integer(2);switch(i){case3:System.out.println(three);break;default:System.out.println(other);break;}}Whatistheresult?()A.threeB.otherC.Anexceptionisthrownatruntime.D.Compilationfailsbecauseofanerroronline12.E.Compilationfailsbecauseofanerroronline13.F.Compilationfailsbecauseofanerroronline15.
public static void main(String[]args){Integer i=new Integer(1)+new Integer(2);switch(i){case3:System.out.println("three");break;default:System.out.println("other");break;}}Whatistheresult?()
A.three
B.other
C.Anexceptionisthrownatruntime.
D.Compilationfailsbecauseofanerroronline12.
E.Compilationfailsbecauseofanerroronline13.
F.Compilationfailsbecauseofanerroronline15.
相关考题:
请完成下列Java程序:建一个数组中的整数按依序重新存放,如果原来的次序为1,2,3,则改为3,2,1。数组大小为10,直接初始化方法进行初始化,注意:请勿改动main()主方法和其他已有语句内容,仅在下划线处填入适当的语句。程序运行结果如下:初始数组:2 4 6 10 8 1 7 5 12 33交换后的数组:33 12 5 7 1 8 10 6 4 2public class ex29_2 {public static void main(String[] args) {int i,temp;System.out.println("初始数组:");int a[]={2,4,6,10,8,1,7,5,12,33};for(i=0;i10;i++)System.out.print(Integer.toString(a[i])+ " ");for(_____________________){temp=a[i];a[i]=a[10-i-1];_________________;}System.out.println();System. out.println ("交换后的数组: ");for(i=0;i10;i++)System.out.print(Integer.toString(a[i])+ " ");}}
下列程序中,实现将封装数据类型Integer和基本数据类型int之间的转换,以及Integer,int类型和String类型之间的转换。请将程序补充完整。程序运行结果如下:123456456public class ex7_1{public static void main(String[]args) {Integer intObj;int n;String s;intObj = new Integer(123);n=intObj.__________;System.out.printin(Integer.toString(n));s=new String("456");intObj=Integer._________;System.out.println(intObj.__________);n=Integer.parseInt(s);System.out.println(Integer.toString(n));}}
如果Add函数的调用代码为:func main() {var a Integer = 1var b Integer = 2var i interface{} = asum := i.(Integer).Add(b)fmt.Println(sum)}则Add函数定义正确的是() A.type Integer intfunc (a Integer) Add(b Integer) Integer { return a + b}B.type Integer intfunc (a Integer) Add(b *Integer) Integer { return a + *b}C.type Integer intfunc (a *Integer) Add(b Integer) Integer { return *a + b}D.type Integer intfunc (a *Integer) Add(b *Integer) Integer { return *a + *b}
最小生成树A.Prim算法:procedure prim(v0:integer);varlowcost,closest:array[1..maxn] of integer;i,j,k,min:integer;
链表的定位函数loc(I:integer):pointer; {寻找链表中的第I个结点的指针}procedure loc(L:linklist; I:integer):pointer;var p:pointer;j:integer;
在下列程序中:Program test(input, output);var i. j:integer;procedure calc(p1, p2: integer);beginp2: = p2 * p2 p1: = p1 - p2; p2: = p2 - p1; end {caic}begin {main} i: =2;j:=3;calc(i,j); write(j);end {main}当参数传递采用引用方式(Call by reference)时,所得结果j=(6);当参数传递采用换名方式(Call by name)时,所得结果,j=(7);当参数传递采用赋值方式(Call by value)时,所得结果,j=(8)。A.3B.6C.10D.16
设有如下程序public class test {public static void main(String args[]) {Integer intObj=Integer.valueOf(args[args.length-1]);int i = intObj.intValue();if(args.length >1、System.out.println(i);if(args.length >0)System.out.println(i -1、;elseSystem.out.println(i - 2、;}}运行程序,输入如下命令:java test 2则输出为:A. testB. test -1C. 0D. 1E. 2
下面的代码用于输出字符数组ch中每个字符出现的次数,应该填入的代码是()public static void main(String[] args) { char[] ch = { 'a', 'c', 'a', 'b', 'c', 'b' }; HashMap map = new HashMap(); for (int i = 0; i < ch.length; i++) { < 填入代码 > } System.out.println(map); }A.if (map.contains(ch[i])) { map.put(ch[i], map.get(ch[i]) + 1); } else { map.put(ch[i], 1); }B.if (map.contains(ch[i])) { map.put(ch[i], (Integer) map.get(ch[i]) + 1); } else { map.put(ch[i], 1); }C.if (map.containsKey(ch[i])) { map.put(ch[i], (int) map.get(ch[i]) + 1); } else { map.put(ch[i], 1); }D.if (map.containsKey(ch[i])) { map.put(ch[i], (Integer) map.get(ch[i]) + 1); } else { map.put(ch[i], 1); }