Computer Applications
A student is trying to convert the string present in x to a numerical value, so that he can find the square root of the converted value. However the code has an error. Name the error (syntax / logical / runtime). Correct the code so that it compiles and runs correctly.
String x= "25";
int y=Double.parseDouble(x);
double r=Math.sqrt(y);
System.out.println(r);
Answer
Syntax error in the line:int y=Double.parseDouble(x);
Corrected code:
String x= "25";
double y=Double.parseDouble(x); //int changed to double
double r=Math.sqrt(y);
System.out.println(r);
Explanation:
The error is a syntax error because the method Double.parseDouble(x) returns a double, but the code is trying to assign it to an int variable without proper casting, which is not allowed in Java.
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