How to split long strings in IntelliJ IDEA automatically?

Question

I am writing a test with very long strings, and I need to split those strings:

private static final String TOO_LONG_JSON = "{field1:field1, field2:field2 ... fieldN:fieldN}"; 

so they would become:

private static final String TOO_LONG_JSON = "{field1:field1, field2:field2" +      "{field3:field3, field4:field4,field6:field6, field7:field7}" +     "{field8:field8, field9:field9,field10:field10, field11:field11}" +     " ... fieldN:fieldN}"; 

Is it possible to set up IntelliJ IDEA to automatically split those long strings?

Answer 1

You can use auto-formatting (CTRL + ALT + L), after few changes in Code Style settings.

• Press CTRL + ALT + S to open Settings window
• Find Code Style / Java section
• Make sure to uncheck "Line Breaks" option and check "Ensure right margin is not exceeded" option
• Press OK to accept changes you've made

Now when using auto-formatting (CTRL + ALT + L) long strings exceeding line character limit will be automatically cut into multiple lines.