That "weird number" is the reference for the array you printed out. It's the default behavior built into the java.lang.Object toString() method. You should override it in your own objects if seeing …

Dec 7, 2011 · The toString() method of an array returns a String describing the identity of the array rather than its contents. That's because arrays don't override Object.toString() , whose …

Oct 16, 2021 · Syntax np[1]+np[np.length-1 is converted to 's' + 'f', which is treated by java as an addition operation. Hence JAVA converts 's' and 'f' to their ASCII integer values 115 and 102 …

Discover why println(array) outputs strange references like '[Ljava.lang.String;@3e25a5' in Java and how to rectify it.

To see the contents of a char array rather than its hash code, use the Arrays.toString() method from the java.util.Arrays class, which provides a clear visual representation of the array's …

Jan 3, 2023 · Given string str, the task is to check whether the string is alphanumeric or not by using Regular Expression. An alphanumeric string is a string that contains only alphabets from …

Oct 9, 2023 · The toCharArray() method would create a separate array to contain the characters from the String, degrading the space complexity from O(1) to O(n). We can say the same with …

Arrays are used to store multiple values in a single variable, instead of declaring separate variables for each value. To declare an array, define the variable type with square brackets: …

Jun 9, 2021 · Given an array of strings arr [] where each string is of the form "name:number" and a character T as input, the task is to generate a new string based on the following conditions: …

When printing Java arrays, unexpected output can often stem from uninitialized elements, incorrect data types, or mishandling of references. Understanding how Java handles arrays …