How to determine whether an array contains an element in java

There are two methods to determine whether the array contains elements:

Method 1, convert the array to a list, and then use the contains method of the list to determine:

Arrays.asList(...).contains(...)

java.lang.String.contains() method returns true if and only if this string contains the specified char value sequence

Declare the java.lang.String.contains() method:

public boolean contains(CharSequence s)

Return value: This method returns true if this string contains, otherwise returns false.

Method 2, traverse the array to determine:

public static <T> boolean contains( final T[] array, final T v ) {
    for ( final T e : array )
        if ( e == v || v != null && v.equals( e ) )
            return true;
 
    return false;
}

For more java knowledge, please pay attention to java basic tutorial.

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