What is getString?
For instance, if it is used to retrieve a numeric type, getString converts the numeric value to a Java String object, and the value has to be converted back to a numeric type before it can be operated on as a number.
What is the use of getString()?
android:text=”@string/hello” /> hello); You can use either getString(int) or getText(int) to retrieve a string. getText(int) retains any rich text styling applied to the string.
What is getString in c#?
GetString(String) Returns the value of the specified string resource.
What is Rs getString 1?
String s = rs. getString(1); float n = rs. getFloat(2); The first line of code gets the value in the first column of the current row of rs (column COF_NAME ), converts it to a Java String object, and assigns it to s .
How check ResultSet getString is null?
Call rs. wasNull() right after calling rs. getString(). It returns a boolean telling you if the last value returned was a database null.
What does getString return in Java?
This means that a String representation of all number-based and character-based types, and a hex-string representation of binary columns such as binary, varbinary, varbinary(max), image, timestamp, and uniqueidentifier, can be returned.
What happens if you call deleteRow on a ResultSet object?
What happens if you call deleteRow() on a ResultSet object? a. The row you are positioned on is deleted from the ResultSet, but not from the database.
How do you read ResultSet?
To read data using the ResultSet ‘s methods (e.g. getString() , getInt() , getFloat() , etc) we can either use the column name, or the column index of the field read in the SQL statement.
What is ResultSet next?
The next() method of the ResultSet interface moves the pointer of the current (ResultSet) object to the next row, from the current position. Statement stmt = con. createStatement(); ResultSet rs = stmt.
What is byte array?
A byte array is simply a collection of bytes. The bytearray() method returns a bytearray object, which is an array of the specified bytes. The bytearray class is a mutable array of numbers ranging from 0 to 256.