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Data Types and Variables

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

Both of the above
unsigned
None of these
signed

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Data Types and Variables
How many primitive data types are there in Java?

7
8
9
6

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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
None of these
4
12
11

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Data Types and Variables
Size of float and double in Java is

32 and 32
32 and 64
64 and 64
64 and 32

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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); }}

129
2
None of these
Compiler error
-127

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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 ) ; }}

20
22
21
Throws Exception
Compilation Error

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