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发布时间:2023-12-18 04:28:56

[填空题]以下程序的输出结果是:true,234。
public class Class31

public static void main(String[] args)

String s1=new String("abc");
String s2=new String("Abc");
boolean b;
b=s1.______;//忽略大小写,比较字符串s1,s2是否相等
s1=new String("0123456789");
s2=s1.______;
System. out. println(b+","+s2);


更多"以下程序的输出结果是:true,234。 public class "的相关试题:

[填空题]以下程序的输出结果是
#include<iostream.h>
class object
private:
int val;
public:
object( ) ;
object(int i) ;
~object( ) ;;
object: :object( )
val=0;
cout < < "Default constructor for object" < < endl;
object: :object(int i)
val=i;
cout < < "Constructor for object" < < val < < endl;
object: :~object( )
cout < < "Destructor for object" < < val < < endl;
class container private:
object one;
object two;
int data;
public:
container( ) ;
container(int i,int j,int k) ;
~container( ) ;;
container: :container( )
data=0;
cout < < "Default constructor for container" < < endl;
container: :container(int i,int j,int k) :two(i) ,one(j)
data=k;
cout < < "Constructor for container" < < endl;
container: :~container( )
cout < < "Destructor for container" < < endl;
void main( )
[填空题]以下程序的输出结果是 【8】 
    #include<iostream.h>
    class object
     private:
       int va1;
      public:
       object( );
       object(int i)
       ~object( ); ;
    object::Object( )
     va1=0;
      cout < < "Default constructor for object" < < end1;
    object::object(int i)
     va1=i
      cout < < "Constructor for object" < < va1 < < end1;
    object::~object( )
     cout < < "Destructor for object" < < va1 < < end1;
    class container  private:
               object one;
                object two;
                int data;
               public:
                container( );
                container(int i,int j,int k);
                ~container( ); ;
    container::container( )
     data=0;
      cout < < "Default constructor for container" < < end1;
    container::container(int i,int j,int k):two(i),one(j)
     data=k;
      cout < < "Constructor for container" < < end1;
  
[单项选择]以下程序执行后的输出结果是 ( )。 #include <iostream.h> class Basel { public: void fun( ){ cout<<"Basel"<<end1; } }; class Base2 { public: void fun( ) { cout<<"Base2"<<end1; } } class Derived : public Basel,public Base2 { }; void main( ) { Derived Obj; Obj.fun( ); }
A. Basel
B. Base2
C. BaselBase2
D. 程序产生二义性
[填空题]以下程序运行后输出的结果是______。 public class exl7 { public static void main(String args []) { int a = 0; for(int j = 1; j <= 20; j++) if(j%5 != 0) a = a + j; System.out.println (a);
[单项选择]下面程序的输出结果是
public class Test
 public static void main(String[] args)
  int[]array=2,4,6,8,10;
  int size=6;
  int result=-1:
  try
   for(int i=0;i<size&&result==-1;i++)
    if(array[i]==20)result=i;
catch(ArithmeticException e)
   System.out.println("Catch---1");
  catch(ArrayIndexOutOfBoundsException e)
   System.out.println("Catch---2");
  catch(Exception e)
   System.out.println("Catch---3");
  
 

A. Catch---1
B. Catch一--2
C. Catch---3
D. 以下都不对
[单项选择]下面程序段的输出结果是
public class Test
public static void main(Stringargs[])
int x,y;
x=(int)Math.sqrt(5)/2+(int)Math.random( )*5/2;
y=(int)Math.sqrt(3)/2+(ht)Math.random( )*3/2;
if(x>y)
System.out.println(”x>y”);
else if(x=y)
System.out.println(”x=y”);
else
System.out.Println(”x<y”);


A. x>y
B. x=y
C. x<y
D. 编译错误
[简答题]阅读以下程序代码,写出程序的输出结果。
public class Class35

public static void main(String[] args)

String s1=new String("0860371"),s2="0860371";
System. out. println(s1==s2);
System. out. println(s1. equals(s2));
System. out. println(s1. endsWith(s2)==s1. startsWith(s2));


[简答题]阅读以下程序代码,写出程序的输出结果。
public class Class32

public static void main(String[] args)

boolean x=true,y=false,z=false;
x=x&&y||z;
y=x||y&&z;
z=!(x!=y)||(y==z);
System. out. println(x+","+y+","+z);


[简答题]阅读以下程序代码,写出程序的输出结果。
public class Class33

public static void main(String[] args)

int a,b,c;
a=b=c=1;
boolean w;
w=a++>1&&++b>c++:
System. out. println(a+","+b+","+c+","+w);


[填空题]以下程序输出100以内的所有质数。
public class Class29

public static void main(String[] args)

int i,j,k=0;
System. out. println("100以内的质数有:");
for(i=3;i<=100;i++)

for(j=2;j<=i/2;j++)

if(i%j==0)______;

if______

System. out. print(i+" ");
k++;
if(k%8==0) System. out. println( );


System. out. println("共"+k+"个。");


[单项选择]下列程序的输出结果是
public class fff
void printValue (int m)
do System.out.println("The value is" +m);

while(--m>10)

public static void main (String arg[])
int i=10;
Test t= new Test( );
t. printValue(i);


A. 8
B. 9
C. 10
D. 11
[单项选择]下列程序的输出结果是
#include
class Myclass
public:Myclass(int i=0,intj=0)
x=i;
y=j;

void show( ) cout < < "x=" < < x < < " " < "y=" < < y < < end1;
void show( )const cout < < "x=" < < " " < < "y=’ < < y < < end1;
privated:
int x; int y;

void main( )
Myclass my1(3,4);
const my2(7,8);
my1.show( );my2.show( );
A. x=4,y=3;x=7,y=8
B. x=3,y=4;x=7,y=8
C. x=7,y=8;x=4,y=3
D. x=8,y=7;x=7,y=8

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