Why is this an issue?

Shared coding conventions make it possible for a team to collaborate efficiently.

This rule makes it mandatory to place a closing curly brace and the next else, catch or finally keyword on two different lines.

Noncompliant code example

public void myMethod() {
  if(something) {
    executeTask();
  } else if (somethingElse) {          // Noncompliant
    doSomethingElse();
  }
  else {                               // Compliant
     generateError();
  }

  try {
    generateOrder();
  } catch (Exception e) {
    log(e);
  }
  finally {
    closeConnection();
  }
}

Compliant solution

public void myMethod() {
  if(something) {
    executeTask();
  }
  else if (somethingElse) {
    doSomethingElse();
  }
  else {
     generateError();
  }

  try {
    generateOrder();
  }
  catch (Exception e) {
    log(e);
  }
  finally {
    closeConnection();
  }
}