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Data Types and Variables

Data Types and Variables
In Java byte, short, int and long all of these are

unsigned
None of these
Both of the above
signed

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Data Types and Variables
Determine output:public class Test{ int a = 10; public void method(int a){ a += 1; System.out.println(++a); } public static void main(String args[]){ Test t = new Test(); t.method(3); }}

5
12
4
11
None of these

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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 10
10 20 10 20
Error
10 20 10 100

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Data Types and Variables
What is the output of the following program?public class Test{static int x = 10 ; public static void main(String[] a){ Test test = new Test( ) ; Test test1 = new Test( ) ; test.x += 1 ; System.out.println( test.x + test1.x ) ; }}

21
22
20
Compilation Error
Throws Exception

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Data Types and Variables
Java is a ........... language.

weakly typed
None of these
strongly typed
moderate typed

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Data Types and Variables
What will be output of following program?public class Test{ public static void main(String[] args){ byte b=127; b++; b++; System.out.println(b); }}

None of these
Compiler error
2
-127
129

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