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package com.siyeh.igtest.bugs.mismatched_string_builder_query_update;
public class MismatchedStringBuilderQueryUpdate {
void foo() {
final StringBuilder b = new StringBuilder();
b.append("");
System.out.println("" + b + "");
final StringBuilder <warning descr="Contents of StringBuilder 'c' are updated, but never queried">c</warning> = new StringBuilder();
c.append(' ');
}
private static CharSequence getSomething()
{
StringBuilder sb = new StringBuilder();
sb.append("abc");
return sb.reverse();
}
void indexedList(List<String> list) {
StringBuilder stringBuilder = new StringBuilder(); // <--- false warning here
list.forEach(stringBuilder::append);
System.out.println(stringBuilder.toString());
}
}
interface List<T> {
default void forEach(Consumer<? super T> action) {
}
}
interface Consumer<T> {
void accept(T t);
}
class EnumConstant {
private static final StringBuilder sb = new StringBuilder();
static {
sb.append("");
}
enum SomeEnum {
ITEM(sb); // passed as argument
SomeEnum(StringBuilder sb) {}
}
}
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