Turn a User Input String to Upper Case Java

Question

This may seem like a silly question, but after going through pages of google, i havnt been able to find the answer i want.

s1.setName(JOptionPane.showInputDialog("Enter Name: ");

For the above piece fo code, how would i format the data the user entered to be all capitals?

Any help here would be appreciated.

score 9 · Accepted Answer · answered Apr 25 '12 at 16:53

9

The String class has a toUpperCase() method on it.

JOptionPane.showInputDialog(..) returns a String, so you can use:

JOptionPane.showInputDialog("Enter name: ").toUpperCase();

answered Apr 25 '12 at 16:53

gregdferrell

Thank You, I was a bit stupid. I was trying the .toUpperCase() everywhere but the end. – user1081326 Apr 25 '12 at 16:55
Remember that in Java, chained methods are always called left to right (absent parenthesis). So you would always want to have the method that changes the string to the right of the method that pulls down the string. – Charles Apr 25 '12 at 17:19

score 8 · Answer 2 · answered Apr 25 '12 at 16:51

8

See String.toUpperCase()

Remember that String is immutable, so this creates a duplicate string

answered Apr 25 '12 at 16:51

ControlAltDel

2 Answers2