There is no reason to concatenate literal strings. Doing so is an exercise is reducing code readability. Instead, the strings should be combined. Similarly, literal strings should not be ``append``ed to a ``StringBuffer`` or ``StringBuilder`` sequentially, but combined into one call.

== Noncompliant Code Example

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String message = "Hello " + "world" + "!";  // Noncompliant
StringBuilder sb = new StringBuilder();
sb.append("I'm pleased").append(" to meet you.");  //Noncompliant
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== Compliant Solution

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String message = "Hello world!";
StringBuilder sb = new StringBuilder();
sb.append("I'm pleased to meet you.");  
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