1)What will be the output of this program ? class Test { public static void main
ID: 3540755 • Letter: 1
Question
1)What will be the output of this program ?
class Test
{
public static void main(String args[])
{
String s1="Include";
String s2="Help";
String s3;
s3=s1.concat(s2.toUpperCase());
System.out.println(s1+","+s2+","+s3);
}
}
a.Include,Help,IncludeHELP
b.Include,Help,IncludeHelp
c.Include,Help,IncludeHelpIncludeHelp
d.None of these
2)How can we add two strings without using concat method?
class Test
{
public static void main(String args[])
{
String s1="Include";
String s2="Help";
String s3;
s3=________;
System.out.println(s3);
}
}
a.s1+s2
b.s1&s2
c.s1&&s2
d."s1"&"s2"
3)What will be the output of this program ?
class Test
{
public static void main(String args[])
{
String strVar=new String("Hello");
System.out.println(strVar.substring(2,3));
}
}
a.llo
b.l
c.ell
d.el
4)What will be the output of this program ?
class Test
{
public static void main(String args[])
{
boolean ans=false;
if(ans=true)
System.out.print("Done");
else
System.out.print("Fail");
}
}
a.Done
b.Fail
c.ERROR
d.DoneFail
5)What will be the output of this program ?
class Test
{
public static void main(String args[])
{
byte a,b;
a=10; b=20;
b=assign(a);
System.out.println(a +","+ b);
}
public static byte assign(byte a)
{
a+=100;
return a;
}
}
110,110
10,110
10,10
None of these
Explanation / Answer
1)Include,Help,IncludeHELP
2)s1+s2
3)l
substring(index1,index2); returns the string from index1 to index 2, in this program substring will return string between index 2 to 3, means only l will return.
4)done
in condition ans=true,the value of ans becomes true hence condition is true.
5)10,110
here variable a in main and a in assign are different, only value of a (10) will pass into function assign, value of a will remain same, answer will 10,110
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