PreconditionsRules

SUGGESTION

Simplification

View source code on GitHub

Suppression

Disable all rules by adding -XepOpt:Refaster:NamePattern=^(?!PreconditionsRules\$).* as compiler argument.

CheckArgument

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("CheckArgument") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!PreconditionsRules\$CheckArgument).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 void testCheckArgument() {
-    if ("foo".isEmpty()) {
-      throw new IllegalArgumentException();
-    }
+    checkArgument(!"foo".isEmpty());
   }

CheckArgumentWithMessage

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("CheckArgumentWithMessage") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!PreconditionsRules\$CheckArgumentWithMessage).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 void testCheckArgumentWithMessage() {
-    if ("foo".isEmpty()) {
-      throw new IllegalArgumentException("The string is empty");
-    }
+    checkArgument(!"foo".isEmpty(), "The string is empty");
   }

CheckElementIndexWithMessage

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("CheckElementIndexWithMessage") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!PreconditionsRules\$CheckElementIndexWithMessage).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 void testCheckElementIndexWithMessage() {
-    if (1 < 0 || 1 >= 2) {
-      throw new IndexOutOfBoundsException("My index");
-    }
+    checkElementIndex(1, 2, "My index");
   }

RequireNonNull

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("RequireNonNull") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!PreconditionsRules\$RequireNonNull).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 String testRequireNonNull() {
-    return checkNotNull("foo");
+    return requireNonNull("foo");
   }

RequireNonNullStatement

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("RequireNonNullStatement") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!PreconditionsRules\$RequireNonNullStatement).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 void testRequireNonNullStatement() {
-    if ("foo" == null) {
-      throw new NullPointerException();
-    }
+    requireNonNull("foo");
   }

RequireNonNullWithMessage

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("RequireNonNullWithMessage") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!PreconditionsRules\$RequireNonNullWithMessage).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 String testRequireNonNullWithMessage() {
-    return checkNotNull("foo", "The string is null");
+    return requireNonNull("foo", "The string is null");
   }

RequireNonNullWithMessageStatement

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("RequireNonNullWithMessageStatement") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!PreconditionsRules\$RequireNonNullWithMessageStatement).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 void testRequireNonNullWithMessageStatement() {
-    if ("foo" == null) {
-      throw new NullPointerException("The string is null");
-    }
+    requireNonNull("foo", "The string is null");
   }

CheckPositionIndex

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("CheckPositionIndex") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!PreconditionsRules\$CheckPositionIndex).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 void testCheckPositionIndex() {
-    if (1 < 0 || 1 > 2) {
-      throw new IndexOutOfBoundsException();
-    }
+    checkPositionIndex(1, 2);
   }

CheckPositionIndexWithMessage

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("CheckPositionIndexWithMessage") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!PreconditionsRules\$CheckPositionIndexWithMessage).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 void testCheckPositionIndexWithMessage() {
-    if (1 < 0 || 1 > 2) {
-      throw new IndexOutOfBoundsException("My position");
-    }
+    checkPositionIndex(1, 2, "My position");
   }

CheckState

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("CheckState") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!PreconditionsRules\$CheckState).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 void testCheckState() {
-    if ("foo".isEmpty()) {
-      throw new IllegalStateException();
-    }
+    checkState(!"foo".isEmpty());
   }

CheckStateWithMessage

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("CheckStateWithMessage") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!PreconditionsRules\$CheckStateWithMessage).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 void testCheckStateWithMessage() {
-    if ("foo".isEmpty()) {
-      throw new IllegalStateException("The string is empty");
-    }
+    checkState(!"foo".isEmpty(), "The string is empty");
   }