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发布时间:2023-10-17 21:18:01

[单项选择]指出下列程序运行的结果 ( )
public class Example
String str=new String("good");
char[]ch=’a’,’b’,’c’;
public static void main(String args[])
Example ex=new Example( );
ex.change(ex.otr,ex.ch);
System.out.print(ex.str+"and");
System.out.print(ex.ch);

public void change(String str,char ch[])
str="test ok";
ch[0]≈’g’;


A. good and abc
B. good and gbc
C. test ok and abc
D. test ok and gbc

更多"指出下列程序运行的结果 ( ) public class Exa"的相关试题:

[单项选择]指出下列程序运行的结果 ( ) public class Example{ String str=new String("good"); char[]ch={’a’,’b’,’c’}; public static void main(String args[]){ Example ex=new Example( ); ex.change(ex.otr,ex.ch); System.out.print(ex.str+"and"); System.out.print(ex.ch); } public void change(String str,char ch[])} str="test ok"; ch[0]≈’g’; } }
A. good and abc
B. good and gbc
C. test ok and abc
D. test ok and gbc
[单项选择]下列程序的运行结果是()  public class test{  private String[] data={“10”,“10.5”};  public void fun(){  double s=0;  for(int i=0;i<3;i++){  try{  s=s+Integer .parseInt(data[i]);  }catch(Exception e){  System.out.print(“errorl:”+data[i]);  }  }  }  public static void main(String[]args){  try{  testd=new test();  d .fun();  }catch(Exception e){  System.out.printIn(“error2”);  }  }  }
A. errorl:10.5
B. error2
C. errorl:10.5 error2
D. 以上都不对
[简答题]阅读下列程序,写出程序运行结果。
public class C3302

public static void main(String[] args)

int[][]a=1,2,3,4,5,6;
System.out.println(a.length+","+a[0].length+","+a[1][1]);
f3302(s[0],s[1]);
System. out. println(s[0]+","+s[1]);
String s1="abc",s2="123";
s1+="xyz";
s2. concat("xyz");
System. out. println(s1+","+s2);

static void f3302(String x,String y)

String z=x;x=y;y=z;


[简答题]阅读下列程序,写出程序运行结果。
class A1

public void f(int aa,int bb)

System.out.println(aa+bb);


class A2 extends A1

public void f(int aa,int bb)

System. out. println(aa-bb);


public class C3201 extends A2

public void f(int aa,int bb)

System. out. println(aa*bb);

public static void main(String[] args)

A1 a=new Al( );
A1 a1=new A2( );
A2 a2=new C3201( );
a.f(20,10);
a1.f(20,10);
a2.f(20,10);


[简答题]阅读下列程序,写出程序运行结果。
class A

int x,y;
A(int x,int yy) x=xx;y=yy;

interface A3202int f3202(A a);
interface B3202int g3202( );
public class C3202 extends A;implements A3202,B3202

A a=new A(x,y);
C3202(int x,int y)

super(x,y);
this. x=x*x;
this. y=y*y;

public int f3202(A a) return x*a.x+x*a.y;
public int g3202( )return x*a.x+x*a.y;
public static void main(String[] args)

int x=10,y=20;
A a=new C3202(x,y);
C3202 c=new C3202(x,y);
System. out. println(a.x+","+a. y);
System. out. println(c.f3202(a));
System. out. println(c. g3202 ( ));


[单项选择]下面程序运行后,输出结果为( )
public class Class07

Class07( )

System. out. println("0param");

Class07(int n)

System. out. println(n+"param");

public static void main(String[] args)

Class07 x=new Class07(100);


A. 出错
B. 0param
C. 100param
D. 程序不错,但没有信息输出
[填空题]如下两个源程序文件,分别编译后,运行Example.class文件,运行结果为______。 AB.java文件代码如下; package test; public class AB { int a=60; public void show( ) { System.out.println(”a=”+a); } Example.java文件代码如下: import test.AB; class Example { public static void main(String args[]) { AB obj=new AB( ); obj.show( ); } }
[填空题]以下程序的运行结果是【 】   #include <string.h>   typedef struct student{    char name[10];    long sno;    float score; }STU;   main( )   { STU a={“zhangsan”,2001,95},b={“Shangxian”,2002,90},       c={“Anhua”,2003,95},d,*p=&d;    d=a;    if(strcmp(a.name,b.name)>0) d=b;    if(strcmp(c.name,d.name)>0) d=c;    printf(“%ld%s/n”,d.sno,p->name); }
[填空题]

以下程序的运行结果是  【19】 
  #include <string.h>
  typedef struct student{
   char name[10];
   long sno;
   float score; }STU;
  main( )
  { STU a={“zhangsan”,2001,95},b={“Shangxian”,2002,90},
      c={“Anhua”,2003,95},d,*p=&d;
   d=a;
   if(strcmp(a.name,b.name)>0) d=b;
   if(strcmp(c.name,d.name)>0) d=c;
   printf(“%ld%s/n”,d.sno,p->name);


[单项选择]下面程序的运行结果是( )。  public class OperatorsAndExpressions{  void equalsMethod1( ){   //基本类型的数据之间的比较   int i=10,j=15;   System.out,println(i==j);  //复合数据类型的数据之间的比较  String s1=new String ("how are you");  String s2=new String ("how are you");  System.out.println(s1==s2):  }  public static void main (String args[ ]){  OperatorsAndExpressions OperAndExp=new OperatorsAndExpressions( ):  //用于基本类型数据和复合类型数据的=="运算符  OperAndExp,equalsMethod1( )  } }
A. false false
B. false true
C. tree false
D. true true
[简答题]阅读下列程序,请写出程序的运行结果。
public class C

public static void main(String[] args)

String text="public static void main(String[] args)";
int theCount=0;
int index=-1;
String theStr="i";
index=text. indexOf(theStr);
while(index>=0)

++theCount;
index+=theStr. length( );
index=text. indexOf(theStr,index);

System. out. println("The Text contains"+theCount+"i");


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