How to write if then else in tjavarow?

[rp2018]

I'm trying to write a case statement in tjavarow using if then else.   This is what I've written and it's not working.  

output_row.Value = if (input_row.Value = "MP\/MM") {   
output_row.Value = "MP / MM";
} else if (input_row.Value = "T \u200 MM") {
output_row.Value = "T - M";
} else if (input_row.Value = "T \u200 ND") {
output_row.Value = "T - ND";
} else if (input_row.Value = "T LF") {
output_row.Value = "LF";
} else {
output_row.Value = input_row.Value; 
}

[TRF]

You must follow Java rules.
1st, remove "output_row.Value =" from the beginning
2nd, don't use == for strings comparison, use String.equals method. For example, you should write
if ("MP\/MM".equals(input_row.Value))

[rp2018]

After making the change per below suggestion.  Now, I'm getting following error message.

Detail Message: Invalid escape sequence (valid ones are  \b  \t  \n  \f  \r  \"  \'  \\ )

[Anonymous · Accepted solution]

I suspect that is caused by this "MP\/MM". Change it to "MP\\/MM" and that will work. "\" is known as an escape character in Java. Certain characters have alternative meanings/uses in Strings. For example, a " character is used to enclose a String, if used inside the String without an escape character, it breaks the String. The "\" character is the escape character, so to use it literally you need to escape it.

[rp2018]

Resolved it by adding \ front of the escape character