Sonar常见问题及修改建议(201912)：https://blog.csdn.net/libusi001/article/details/103717457
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一、报错提示
'if' statement can be simplified
SonarLint: Replace this if-then-else statement by a single return statement
二、源代码
if (paperList != null && !paperList.isEmpty()) {
return true;
}
return false;三、更改方式
return paperList != null && !paperList.isEmpty();有用请点赞，养成良好习惯！
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