#Java 7:(削除) 53 (削除ここまで) 52 Bytes

int g(String _){return"google"==_?0/0:_.length();} 

Above code will throw ArithmeticException for division by zero and for any String other than google. Worth to note that == compares reference and won't work for String Objects.

#Java 8 : 29 Bytes (Based on suggestion given in below comment)

s->s=="google"?0/0:s.length()

Java 7:(削除) 53 (削除ここまで) 52 Bytes

int g(String _){return"google"==_?0/0:_.length();} 

Above code will throw ArithmeticException for division by zero and for any String other than google. Worth to note that == compares reference and won't work for String Objects.

Java 8 : 29 Bytes

(Based on suggestion given in below comment)

s->s=="google"?0/0:s.length()

#Java (削除) 53 (削除ここまで) 52 Bytes

int g(String _){return"google"==_?0/0:_.length();} 

Above code will throw ArithmeticException for division by zero and for any String other than google. Worth to note that == compares reference and won't work for String Objects.

#Java 7:(削除) 53 (削除ここまで) 52 Bytes

int g(String _){return"google"==_?0/0:_.length();} 

Above code will throw ArithmeticException for division by zero and for any String other than google. Worth to note that == compares reference and won't work for String Objects.

#Java 8 : 29 Bytes (Based on suggestion given in below comment)

s->s=="google"?0/0:s.length()

#Java 53 Bytes

int g(String s){return"google"==s?null:s.length();} 

Above code will throw very famous NullPointerException and for any String other than google. Worth to note that == compares reference and won't work for String Objects.

#Java (削除) 53 (削除ここまで) 52 Bytes

int g(String _){return"google"==_?0/0:_.length();} 

Above code will throw ArithmeticException for division by zero and for any String other than google. Worth to note that == compares reference and won't work for String Objects.