The document contains multiple code snippets in Java, showcasing various programming concepts such as loops, conditionals, and operations on data types. It includes specific outputs expected from each snippet, as well as questions designed to identify logical and syntax errors within the code. Additionally, there are expressions and mathematical operations expressed in Java syntax.

1. Find OUTPUT of The following Code
1 int i,k;
for(i=1,k=1;i<=5;k+=i,i++)
System.out.println(i+" "+k);
2 int x=5,y;
y=++x;
System.out.println(y);
3 int a = 25;
System.out.println(a++);
System.out.println(--a);
4 int x = 5, y=6, z;
z = x++ + ++y;
System.out.println(z);
5 int m=12;
int n = m++ * 5 + --m
System.out.println(n);
6 int y=14;
int z = (++y * (y++ + 5))
7 int x = 20, y = 5, z;
z = x > y ? 100 : 50;
System.out.println(z);
8 int x =25, y;
y = ++x % 6;
System.out.println(y);
9 int a = 10, b = 5, p;
p = a++ + ++b;
System.out.println(p+” “+a+” “+b);
10 for(int x = 1; x<=15; x+=2)
System.out.println(x);
11 int x = 5;
while(x>10)
{
System.out.println(x);
x++;
}
12 int a = 5;
do
{
System.out.println(a);
a++;
}while(a<4);
13 int k=5,j=9;
k+= k++ - ++j + k;
System.out.println(“k=”+k);
System.out.println(“j=”+j);
14 double b = -15.6;
double a = Math.rint(Math.abs(b));
System.out.println(“a=”+a);
15 State the number of times loop will be
executed and the final output :
int p = 200;
While(true)
{
if(p<100)
break;
p=p-20;
}
System.out.println(p);
16 int x = 1, y = 5;
while (x<y)
{
y++;
x+=2;
}
System.out.println(x+” “+y);
17 for(int x = 1; x<=20; x++)
{
if(x % 5 == 0)
continue;
System.out.println(x);
}
18 for(int x = 1; x<=20; x++)
{
if(x % 7 == 0)
break;
System.out.println(x);
}
19 int a = 25, b = 39;
while(b>0)
{
b = b – a;
a = a – b;
}
System.out.println(a + “ “+b);
20 for(int x=0;x<=15;x+=2);
System.out.println(x);
21 int a = 5, b = 7, c;
c = ++a + b++ + --a;
System.out.println(c);
22 int x = 20, y = 25;
x = ++x + y++ + --y + --x;
System.out.println(x);
23 int n = 2,m;
m = --n *2*n;
System.out.println(m);
24 int a = 25;
int b = (++a * 4) % 25;
System.out.println(b);
25 char c = ‘A’;
short m = 26;
int n = c + m;
System.out.println(n);
26 What will be the value of following expression
if the value of m = 5 and n=20?
(m + n) > 25 ? 200 : 20;

2. 27 Int x = 99, y = 10;
y = ++x;
System.out.println(“X:”+x+” Y:”+y);
28 double x = 0.055,y = 100.05;
System.out.println((int)(x*y));
29 int x = 10, y=15;
x = x+y;
y = x-y;
x = x-y;
System.out.println(x+ “ *** ”+y);
30 int sum = 20;
if(sum<20)
System.out.print(“Under ”);
else
System.out.println(“Over “);
System.out.println(“the limit”);
31 What will be the output, if n = 1 and if n= 2 in
the following code?
switch(n)
{
case 1:
System.out.println(“One);
break;
case 2:
System.out.println(“ Zero”);
default:
System.out.println(“Wrong input”);
}
32 int s=1,p=0;
for(int j = 1;j<=8;j++)
{
if(j<=4)
s*=j;
else
p+=j;
}
System.out.println(s+” “+p);
33 If array[]={1,9,8,5,2};
i) What is array.length?
ii) What is array[2]?
34 int x[]={1,2,3,4,5}, y ={5,4,3,2,1};
int i,j;
for(i=0,j=x.length;i<x.length;i++,j- -)
System.out.println(x[i] * y[j]);
35 String s = “Please come, let us go to play”;
System.out.println (s.substring(7,11));
System.out.println (s.lastIndexOf(‘o’));
System.out.println (s.toUpperCase());
System.out.println (s.charAt(17));
System.out.println (s.indexOf(9,’o’));
System.out.println (s.substring(0,6) +
s.substring(20,22));
36 Sting k=”WELCOME TOPPERS”
System.out.println(k.toLowerCase());
System.out.println(k.length());
System.out.println(k.indexOf(‘E’));
System.out.println(k.replace(‘O’,’A’));
System.out.println(k.substring(8));
37 String n = “Computer Knowledge.”;
String m = “Computer Application”;
System.out.println
(n.substring(0,8).concat (m.substring(9)));
System.out.println(n.endsWith(“e”);
38 System.out.println(“Four:”+(4+2));
System.out.println(“Four:”+2+2);
39 State the output of the following code
fragment, where int choice =1, x= 0;
y = 0, z=0;
switch(choice++)
{
case 2: x++; y--; z++;
break;
case 3: x+=2; y+=3; z-=3;
default: ++x; ++y; ++z;
}
System.out.println(“X=”+x+”Y =”+y+”Z=”+z);
Questions to practice to find LOGICAL and SYNTAX error in the code
1. public int getData(int num1, int num2)
{
int result = num1 + num2;
System.out.println(“Result is :” +
result);
}
2. class Add
{
public void doAddition(int x, y)
{
System.out.print(x+y);
}
}
3. if(x = 1)
k=100;
else
k = 10;
4. if ( x > y)
System.out. println(“y is greater”);
else
System.out. println(“x is greater”);
5. int i=5, j = 10
if ( (i < j) || (i=10))
System.out.println(“OK”);
System.out.println(“not OK);
6. int x=0;
while(x < 10)
System.out.println(x);
x ++;
7. for ( x = 0; x>= 10; x- -)
System.out.println(x);
8. for (i = 0, i <= 25; i ++)
System.out.println(i);
System.out.println(“the value is “;x);

3. 9. public int add(int x,int y)
{
int z=x + y;
}
10. int a = 5 , b = 7 , c = 1;
if (a > b || b > c)
System.out.println(a + “ is greater”);
11. int a =90, b = 45, c = 45
if(a = = 90 && b = = 90 && c = = 90)
System.out.println(“Right angle
Triangle”);
12. double p =1000.00, t = 5.0, r = 10.5;
I = p * r * t / 100;
System.out.println(I);
13. double average = M1+M2+M3+M4 / 4;
14. String s = ‘computer’;
15. int l = “Good Morning”.length;
16. for (int x = 1; x < = 10 ; x++)
{
n = 1;
System.out.println(n);
n++;
}
correct the code to get 1 3 5 7 9 11 13
15 17 19 output.
17. int x, y, z;
x = 6;
y = 7;
x + y = z;
System.out.println(z);
18. int a[] = new int [10];
for( x =1 ; x<=15 ; x++)
a[x] = x * x;
19. int n = integer.ParseInt(br.readline());
20. String st = “School”;
System.out.println(st.reverse( ));
21. int x = 5, y = 8, temp;
temp = x;
x = y;
y = temp;
System.out.println(x, y, temp);
22. int x[ ] = [3,6,8,4,7,0,4,1,5];
23. int ar[ ] = [3,6,8,4,7,0,4,1,5];
System.out.println(ar.length());
Express the following in Java expression
(1-y3
)0.5
√ (x2 – x1)2
+ (y2 - y1)2
–b + (b2
-4ac)/2a
3x2
+2y [2011]
x - y
(x2
- 2y2
)3
(1 + x4
)0.25
a = (0.05 – 2y3
)/x - y
A3
+ B3
+ C3
– 3ABC
x1/3
√ l2
+ b2
x – [ y – {+ (a + b – c – d)}]
3x2
y+2yx2
( x – y)0.5
s = ut + ½at2
(a + b)n
√3 + b
√ 2as + u2
(2012)
5x * 7 – 5x
5x+2
– 5x+1
2AB + 2BC + 2CA
X2Y2 + Y2Z2 + Z2 + X2