src/java.base/share/classes/java/util/ArrayList.java

*** 292,302 ****
  
      /**
       * Returns {@code true} if this list contains the specified element.
       * More formally, returns {@code true} if and only if this list contains
       * at least one element {@code e} such that
!      * <tt>(o==null&nbsp;?&nbsp;e==null&nbsp;:&nbsp;o.equals(e))</tt>.
       *
       * @param o element whose presence in this list is to be tested
       * @return {@code true} if this list contains the specified element
       */
      public boolean contains(Object o) {
--- 292,302 ----
  
      /**
       * Returns {@code true} if this list contains the specified element.
       * More formally, returns {@code true} if and only if this list contains
       * at least one element {@code e} such that
!      * <code>(o==null&nbsp;?&nbsp;e==null&nbsp;:&nbsp;o.equals(e))</code>.
       *
       * @param o element whose presence in this list is to be tested
       * @return {@code true} if this list contains the specified element
       */
      public boolean contains(Object o) {
*** 305,315 ****
  
      /**
       * Returns the index of the first occurrence of the specified element
       * in this list, or -1 if this list does not contain the element.
       * More formally, returns the lowest index {@code i} such that
!      * <tt>(o==null&nbsp;?&nbsp;get(i)==null&nbsp;:&nbsp;o.equals(get(i)))</tt>,
       * or -1 if there is no such index.
       */
      public int indexOf(Object o) {
          if (o == null) {
              for (int i = 0; i < size; i++)
--- 305,315 ----
  
      /**
       * Returns the index of the first occurrence of the specified element
       * in this list, or -1 if this list does not contain the element.
       * More formally, returns the lowest index {@code i} such that
!      * <code>(o==null&nbsp;?&nbsp;get(i)==null&nbsp;:&nbsp;o.equals(get(i)))</code>,
       * or -1 if there is no such index.
       */
      public int indexOf(Object o) {
          if (o == null) {
              for (int i = 0; i < size; i++)
*** 325,335 ****
  
      /**
       * Returns the index of the last occurrence of the specified element
       * in this list, or -1 if this list does not contain the element.
       * More formally, returns the highest index {@code i} such that
!      * <tt>(o==null&nbsp;?&nbsp;get(i)==null&nbsp;:&nbsp;o.equals(get(i)))</tt>,
       * or -1 if there is no such index.
       */
      public int lastIndexOf(Object o) {
          if (o == null) {
              for (int i = size-1; i >= 0; i--)
--- 325,335 ----
  
      /**
       * Returns the index of the last occurrence of the specified element
       * in this list, or -1 if this list does not contain the element.
       * More formally, returns the highest index {@code i} such that
!      * <code>(o==null&nbsp;?&nbsp;get(i)==null&nbsp;:&nbsp;o.equals(get(i)))</code>,
       * or -1 if there is no such index.
       */
      public int lastIndexOf(Object o) {
          if (o == null) {
              for (int i = size-1; i >= 0; i--)
*** 509,519 ****
      /**
       * Removes the first occurrence of the specified element from this list,
       * if it is present.  If the list does not contain the element, it is
       * unchanged.  More formally, removes the element with the lowest index
       * {@code i} such that
!      * <tt>(o==null&nbsp;?&nbsp;get(i)==null&nbsp;:&nbsp;o.equals(get(i)))</tt>
       * (if such an element exists).  Returns {@code true} if this list
       * contained the specified element (or equivalently, if this list
       * changed as a result of the call).
       *
       * @param o element to be removed from this list, if present
--- 509,519 ----
      /**
       * Removes the first occurrence of the specified element from this list,
       * if it is present.  If the list does not contain the element, it is
       * unchanged.  More formally, removes the element with the lowest index
       * {@code i} such that
!      * <code>(o==null&nbsp;?&nbsp;get(i)==null&nbsp;:&nbsp;o.equals(get(i)))</code>
       * (if such an element exists).  Returns {@code true} if this list
       * contained the specified element (or equivalently, if this list
       * changed as a result of the call).
       *
       * @param o element to be removed from this list, if present