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JAVA Strings

JAVA Strings
toString() method is defined in

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

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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); }}

false true
true false
false false
true true

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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
true
false
0
1

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JAVA Strings
What will be output?String S1 = "S1 ="+ "123"+"456";String S2 = "S2 ="+(123+456);

S1=123456,S2=123456
S1=579,S2=579
S1=123456, S2=579
None of This

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JAVA Strings
The String method compareTo() returns

true
an int value
false
1
-1

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

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

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