5道JAVA题
module 1 – getting started
q1.what will happen when you compile and run the following code?
(4)
public class myclass{
static int i;
public static void main(string argv){
system.out.println(i);
}
}
1) error variable i may not have been initialized
2) null
3) 1
4) 0
q2.which of the following will compile without error (2)(3)
1)
import java.awt.*;
package mypackage;
class myclass {}
2)
package mypackage;
import java.awt.*;
class myclass{}
3)
/*this is a comment */
package mypackage;
class myclass{} ||| q3.what will happen if you try to compile and run the following code (1)
public static void main(string arguments) {
}
system.out.println(arguments);
}
1) error can't make static reference to void amethod.
3) error array must include parameter
q4.given the following code(2)
int x=2000;
system.out.println("ms "+argv[1]+"please pay $"+x);
what will happen if you attempt to compile and run this code with the command line
1) compilation and output of ms diggle please pay $2000
3) compilation and output of ms jones please pay $2000
q5.you have a public class called myclass with the main method defined as follows(4)
system.out.println(parm[0]);
if you attempt to compile the class and run the program as follows
what will happen?
2) run time error, main is not correctly defined
4) compilation and output of hello
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