Set the font size for text files such as edit area, console, XML, etc. in eclipse

Eclipse editing Area set font size: 

Window-Preferences (Preferences)-General-appearance (appearence)-Colors and fonts (Colors and Fonts), in the Right dialog box, select Java-java Editor Text Font, click the Change button that appears, you can set the font size of the program displayed in the main form, click Apply in the bottom right corner after setting up, and then click OK.

Eclipse Settings Console font size: 

Windows----->preferences-----> Appearance--->colors and fonts------> debug---->console Font Edit on right and set font

Eclipse Sets the size of the XML, txt, properties file fonts

Eclipse changes the font settings of XML files, TXT files, property files, and other file editors:
window--preferences--general--appearance--colors and fonts--basic--"Text font" then click Change to set the font size

Set the font size for text files such as edit area, console, XML, etc. in eclipse