diff --git a/infra/expr/type/espresso/src/main/java/org/apache/shardingsphere/infra/expr/espresso/EspressoInlineExpressionParser.java b/infra/expr/type/espresso/src/main/java/org/apache/shardingsphere/infra/expr/espresso/EspressoInlineExpressionParser.java
index 8e9b33fc3ad7f..ed896ce592a65 100644
--- a/infra/expr/type/espresso/src/main/java/org/apache/shardingsphere/infra/expr/espresso/EspressoInlineExpressionParser.java
+++ b/infra/expr/type/espresso/src/main/java/org/apache/shardingsphere/infra/expr/espresso/EspressoInlineExpressionParser.java
@@ -52,12 +52,6 @@ public final class EspressoInlineExpressionParser implements InlineExpressionPar
         JAVA_CLASSPATH = dir + File.separator + "groovy.jar";
     }
     
-    /**
-     * Initialize SPI.
-     *
-     * @param props A Properties instance that carries inlineExpression.
-     *              And for compatibility reasons, inlineExpression allows to be null.
-     */
     @Override
     public void init(final Properties props) {
         this.inlineExpression = props.getProperty(INLINE_EXPRESSION_KEY);
diff --git a/infra/expr/type/groovy/src/main/java/org/apache/shardingsphere/infra/expr/groovy/GroovyInlineExpressionParser.java b/infra/expr/type/groovy/src/main/java/org/apache/shardingsphere/infra/expr/groovy/GroovyInlineExpressionParser.java
index 27411402be02a..5e3442844d31c 100644
--- a/infra/expr/type/groovy/src/main/java/org/apache/shardingsphere/infra/expr/groovy/GroovyInlineExpressionParser.java
+++ b/infra/expr/type/groovy/src/main/java/org/apache/shardingsphere/infra/expr/groovy/GroovyInlineExpressionParser.java
@@ -51,12 +51,6 @@ public final class GroovyInlineExpressionParser implements InlineExpressionParse
     
     private String inlineExpression;
     
-    /**
-     * Initialize SPI.
-     *
-     * @param props A Properties instance that carries inlineExpression.
-     *              And for compatibility reasons, inlineExpression allows to be null.
-     */
     @Override
     public void init(final Properties props) {
         this.inlineExpression = props.getProperty(INLINE_EXPRESSION_KEY);
diff --git a/infra/expr/type/purelist/src/main/java/org/apache/shardingsphere/infra/expr/purelist/PureListInlineExpressionParser.java b/infra/expr/type/purelist/src/main/java/org/apache/shardingsphere/infra/expr/purelist/PureListInlineExpressionParser.java
index 2370284dbbf86..2fa0ca62fa2e9 100644
--- a/infra/expr/type/purelist/src/main/java/org/apache/shardingsphere/infra/expr/purelist/PureListInlineExpressionParser.java
+++ b/infra/expr/type/purelist/src/main/java/org/apache/shardingsphere/infra/expr/purelist/PureListInlineExpressionParser.java
@@ -34,11 +34,6 @@ public final class PureListInlineExpressionParser implements InlineExpressionPar
     
     private String inlineExpression;
     
-    /**
-     * Initialize SPI.
-     *
-     * @param props A properties instance that carries inlineExpression, and for compatibility reasons, inlineExpression allows to be null.
-     */
     @Override
     public void init(final Properties props) {
         this.inlineExpression = props.getProperty(INLINE_EXPRESSION_KEY);