Data Types and Variables Determine output:class A{ public static void main(String args[]){ int x; x = 10; if(x == 10){ int y = 20; System.out.print("x and y: "+ x + " " + y); y = x*2; } y = 100; System.out.print("x and y: " + x + " " + y); }} 10 20 10 100 10 20 10 20 10 20 10 10 Error 10 20 10 100 10 20 10 20 10 20 10 10 Error ANSWER DOWNLOAD EXAMIANS APP
Data Types and Variables Determine output:public class Test { static void test(float x){ System.out.print("float"); } static void test(double x){ System.out.print("double"); } public static void main(String[] args){ test(99.9); }} Exception is thrown at runtime Compilation Error float double Exception is thrown at runtime Compilation Error float double ANSWER DOWNLOAD EXAMIANS APP
Data Types and Variables What will the output of the following program?public class Test{ public static void main(String args[]){ float f = (1 / 4) * 10; int i = Math.round(f); System.out.println(i); }} 2 2.5 25 3 0 2 2.5 25 3 0 ANSWER DOWNLOAD EXAMIANS APP
Data Types and Variables How many primitive data types are there in Java? 6 9 7 8 6 9 7 8 ANSWER DOWNLOAD EXAMIANS APP
Data Types and Variables What is the output for the below code?public class Test{ int _$; int $7; int do; public static void main(String argv[]){ Test test = new Test(); test.$7=7; test.do=9; System.out.println(test.$7); System.out.println(test.do); System.out.println(test._$); }} Compile error - do is not valid identifier. Compile error - $7 is not valid identifier. 7 0 0 7 9 0 None of these Compile error - do is not valid identifier. Compile error - $7 is not valid identifier. 7 0 0 7 9 0 None of these ANSWER DOWNLOAD EXAMIANS APP
Data Types and Variables The following program:public class Test{ static boolean isOK; public static void main(String args[]){ System.out.print(isOK); } } Prints false Prints true Will not compile as boolean can never be static Will not compile as boolean is not initialized Prints false Prints true Will not compile as boolean can never be static Will not compile as boolean is not initialized ANSWER DOWNLOAD EXAMIANS APP
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