Java Questions Answers-Java basic syntax(PartI)

Java basic syntax(PartI)

1. In Java, A program starts with the main() method of a class?
a. True b. False Check answer

a.True

22. The System.out.println() method is used to receive data from keyboard in a console program.
a. True b. False
Check answer

b. False

3. The System.in.read() can be used to read a character from keyboard.
a. True b. False Check answer

a.True

4. In Java, to read a string from keyboard, the BufferedReader class is used.
a. True b. False Check answer

a. True

5. In Java, to read a numerical value from keyboard, the Scanner class is used.
a. True b. False Check answer

a. True

6. A comment in Java language multi-line comment starts with /* and ends with */.
a. True b. False Check answer

a. True

7. In Java, which of the following is not a numerical type?
a.int b.char c. float d.short e.double Check answer

b.char

8. In Java language, which one is not the integer value?
a.12 b.'23' c.10 d.100 Check answer

b.'23'

9. What is the type of each of the following constants?
a.10 b.'2' c.10.7 d."12" Check answer

a.int b.char c.float or double d.String

10. What is the type of each of the following constant?
a."Dara" b.'2.9' c."10.7" d.13.9f e.'\a' Check answer

a.string b.char c.string d.float e.char

11. Find any errors in the following Java program:

public static void main(String[] args){ /* This is the main method*/
System.out.println("Hello")

}
Check answer

Missing semi-colon(;) System.out.println statement

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Posted comments

Phan Neth, CICI, year 3:

Now it is ok teacher. I can connect to database and select data from it. Than you so much teacher !!!!!

04-30-2013

Dara:

Copy and paste the link below to the address box to learn how to connect C and Mysql server:
http://www.worldbestlearningcenter.com/index_files/cpp-tutorial-connect_mysql_database.htm

04-27-2013

Phan Neth, CICI, year 3:

Hello teacher i want to connect C programming language to MySql server but it have problem. When i compile it always error with library " my_global.h
and mysql.h", so how should i do?

04-27-2013

Phan Neth, Year 3 at CICI,:

I have some problem about connection to mysql server. So I hope teacher can help me. Thank !!!!

04-26-2013

Federico:

Output appears the same also this way:

static void Main(string[] args)
{
int[,] myArray = new int[5, 5];
int row, i;
int n = 1;

for (row = 0; row < 5; row++)
{
for (i = 0; i < 5; i++)
{
myArray[row, i] = n;
if (row == 1 && i == 2) Console.Write(" \t");
else Console.Write("{0} \t", n);

if (n!=26) n++;
if((i+1)%5==0) Console.WriteLine("\n");
}
}
Console.ReadLine();
}

04-13-2013

Dara:

Let pointer p point to the index 1 elem (value=2) of the array.
int *p= a+1;
Let pointer q point to the index 6 elem (value=5) of the array.
int *q= a+6;
-Expression q-p is the subtraction of address of the index 6 element and the address of index 1 elem of the array. So, the result is 5.
-Expression *p+*q is the sum of the value of index 1 elem (2) and the value of index 6 elem (5). So, the result is 7.
In conclusion, the output is 57.

03-28-2013

Anushka :

Find the output of following code
main()
{
int a[] = {1,2,9,8,6,3,5,7,8,9};
int *p= a+1; int *q= a+6;
cout<< q-p <<*p+*q; }

03-28-2013

Dara:

Option Explicit
Dim Cn as New ADODB.Connection
Private Sub_Form_Load()
Cn.Open "Provider=SQLOLEDB; Data Source=ServerName; Initial Catalog=DatabaseName;UserID=UserName; Password=Passw"
End Sub
You will need to replace ServerName with the name of your server (installed SQL Server), DatabaseName withe the name of your data file that you want to connect to, UserName with the name of the user to login to SQL Server, and Passw with the password used to login to SQL Server.

03-13-2013

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Java Questions Answers-Java basic syntax(PartI)

Java basic syntax(PartI)

Java questions and answers

Posted comments