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JAVA Strings

JAVA Strings
How many Constructor String class have?

11
7
2
None of this
13

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JAVA Strings
The output of the following fraction of code ispublic class Test{ public static void main(String args[]){ String s1 = new String("Hello");String s2 = new String("Hellow");System.out.println(s1 = s2);}}

None of these
Throws an exception
Compilation error
Hellow
Hello

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JAVA Strings
Determine output:public class Test{ public static void main(String args[]){ String str = null; if(str.length() == 0){ System.out.print("1"); } else if(str == null){ System.out.print("2"); } else{ System.out.print("3"); } }}

"1" is printed.
An exception is thrown at runtime.
"2" is printed.
Compilation fails.
"3" is printed.

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

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

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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
0
true
false
-1

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JAVA Strings
What will be the output of the following program code?public class Test{ public static void main(String args[]){ String s = "what"; StringBuffer sb = new StringBuffer("what"); System.out.print(sb.equals(s)+","+s.equals(sb)); }}

true,false
false,true
false,false
None of these
true,true

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