Question

You coded the following on lines 10-12 of class Test.java; String s; // line 10 int...

You coded the following on lines 10-12 of class Test.java;

String s; // line 10

int I = s.length( ); // line 11

when you compile,

Test.java:11: error: variable s might not have been initialized

int I = s.length( ); // line 11

^

1 error

what is the problem and how to fix

Test.java:10: error: cannot find symbol

double d = Math.PI( ); // line 10

^

symbol : method PI( )

location : class Math

1 error

what is the problem and how to fix

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Homework Answers

Answer #1

String s; // line 10

int I = s.length( ); // line 11

when you compile,

Test.java:11: error: variable s might not have been initialized

int I = s.length( ); // line 11

^

1 error

what is the problem and how to fix

Ans. Intialize string with empty String to get length.

such that

String s = "";
int l = s.length();
System.out.println(l);

/* OUTPUT */

0

what is the problem and how to fix

Test.java:10: error: cannot find symbol

double d = Math.PI( ); // line 10

Ans.

double d = Math.PI; // PI is static variable not method MEANS CANNOT USE PI()
System.out.println(d);

/* OUTPUT */

3.141592653589793

/* PLEASE UPVOTE */

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