Set 17

Multiple Choice Question

QID: 
172

What will the following program print?

class Test{
public static void main(String args[]){
int var = 20, i=0;
do{
while(true){
if( i++ > var) break;
}
}while(i<var--);
System.out.println(var);
}
}

Select 1 option

A. 19
B. 20
C. 21
D. 22
E. It will enter an infinite loop.

Multiple Choice Question

QID: 
171

What will the following code print?

public class TestClass{
int x = 5;
int getX(){ return x; }
public static void main(String args[]) throws Exception{
TestClass tc = new TestClass();
tc.looper();
System.out.println(tc.x);
}
public void looper(){
int x = 0;
while( (x = getX()) != 0 ){
for(int m = 10; m>=0; m--){
x = m;
}
}
}
}

Select 1 option

A. It will not compile.
B. It will throw an exception at runtime.
C. It will print 0.
D. It will print 5.
E. None of these.

Multiple Choice Question

QID: 
170

Consider the following method which is called with an argument of 7:

public void method1(int i){
int j = (i*30 - 2)/100;
POINT1 : for(;j<10; j++){
boolean flag = false;
while(!flag){
if(Math.random()>0.5) break POINT1;
}
}
while(j>0){
System.out.println(j--);
if(j == 4) break POINT1;
}
}

What will it print?
(Assume that Math.random() return a double between 0.0 and 1.0, not including 1.0)

Select 1 option

A. It will print 1 and 2
B. It will print 1 to N where N is a random number.
C. It will not compile.
D. It will throw an exception at runtime.

Multiple Choice Question

QID: 
169

What will the following code print?

public class BreakTest{
public static void main(String[] args){
int i = 0, j = 5;
lab1 : for( ; ; i++){
for( ; ; --j) if( i >j ) break lab1;
}
System.out.println(" i = "+i+", j = "+j);
}
}

Select 1 option

A. i = 1, j = -1
B. i = 1, j = 4
C. i = 0, j = 4
D. i = 0, j = -1
E. It will not compile.

Multiple Choice Question

QID: 
168

Given the following code, which of these statements are true?

class TestClass{
public static void main(String args[]){
int k = 0;
int m = 0;
for ( int i = 0; i <= 3; i++){
k++;
if ( i == 2){
// line 1
}
m++;
}
System.out.println( k + ", " + m );
}
}

Select 3 options

A. It will print 3, 2 when line 1 is replaced by break;
B. It will print 3, 2 when line 1 is replaced by continue.
C. It will print 4, 3 when line 1 is replaced by continue.
D. It will print 4, 4 when line 1 is replaced by i = m++;
E. It will print 3, 3 when line 1 is replaced by i = 4;

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