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JAVA Strings

JAVA Strings
How many Constructor String class have?

2
7
11
None of this
13

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JAVA Strings
What is the output of the following println statement?String str1 = "Hellow";System.out.println(str1.indexOf('t'));

1
false
true
0
-1

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JAVA Strings
What will be the output of the following program?public class Test{ public static void main(String args[]){String str1 = "one";String str2 = "two";System.out.println(str1.concat(str2)); }}

onetwo
None of these
one
twoone
two

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JAVA Strings
What will be the output?String str1 = "abcde";System.out.println(str1.substring(1, 3));

abcd
bcd
bc
abc
None of these

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JAVA Strings
What could be output of the following fragment of code?public class Test{ public static void main(String args[]){ String x = "hellow";int y = 9;System.out.println(x += y); } }

Compilation error
hellow9
None of these
Throws an exception as string and int are not compatible for addition
9hellow

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JAVA Strings
The String method compareTo() returns

false
-1
an int value
true
1

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