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JAVA Strings

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

1
0
true
false
-1

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JAVA Strings
toString() method is defined in

java.lang.util
java.lang.Object
None of these
java.lang.String

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JAVA Strings
String str1 = "Kolkata".replace('k', 'a');In the above statement, the effect on string Kolkata is

Displays error message
All characters k are replaced by a.
All characters a are replaced by k.
The first occurrence of k is replaced by a.

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JAVA Strings
The class string belongs to ................. package.

java.awt
java.string
java.applet
java.lang

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JAVA Strings
How many Constructor String class have?

2
11
7
13
None of this

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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 s1 = "java";String s2 = "java";System.out.println(s1.equals(s2));System.out.println(s1 == s2); }}

true true
false true
false false
true false

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