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Java Articles
Page 252 of 450
How to Convert String to Object in Java?
In Java, Object is a parent class of all the classes. So, we can directly assign a string to an object as each class is internally a child class of the Object class. A string is generally considered a data type and is often implemented as an array data structure of bytes (or words) that stores a sequence of elements, typically characters, using some character encoding. The object data type is also known as non-primitive or reference data type; these are not predefined ones; instead, we need to create them. Let’s deep dive into this article, to know how it ...
Read MoreHow to Convert Date to Timestamp in Java?
In Java, Date can be converted Timestamp by using Timestamp class. Timestamp class is present in sql package. Date only store date value whereas timestamp stores both date and time value. The TIMESTAMP data type is used for values that contain both date and time parts. TIMESTAMP has a range of '1970-01-01 00:00:01' UTC to '2038-01-19 03:14:07' UTC. Let’s deep dive into this article, to know how it can be done by using Java programming language. To show you some instances Instance-1 Suppose the input date is written on 05/01/2023. Then corresponding Timestamp is “2023-01-05 20:37:54.832”. Instance-2 ...
Read MoreFind product of Each Row and Column in Java
In Java, Array is an object. It is a non-primitive data type which stores values of similar data type. The matrix in java is nothing but a multi-dimensional array which represents multiple rows and columns. Here we have given a matrix which contains set of elements and as per the problem statement we have to find the product of each row elements and columns elements. In this article we will see, how it can be done by using Java programming language. To show you some instances Instance-1 Given matrix =21 22 23 24 25 26 27 28 29 Product of each row − ...
Read MoreFind Product Between Lower Triangular & Upper Triangular Matrix in Java
In Java, Array is an object. It is a non-primitive data type which stores values of similar data type. The matrix in java is nothing but a multi-dimensional array which represents multiple rows and columns. Triangular Matrix − A square matrix is called as a triangular matrix if all the elements above or below the diagonal of that matrix are zeros. Lower- Triangular Matrix − A square matrix is called as a Lower- Triangular Matrix if all the elements above the diagonal of that matrix are zeros. Upper- Triangular Matrix − A square matrix is called as a Upper ...
Read MoreFind Multiplication of Diagonal Elements of a Matrix in Java
In Java, Array is an object. It is a non-primitive data type which stores values of similar data type. The matrix in java is nothing but a multi-dimensional array which represents multiple rows and columns. Here we have given a matrix which contains set of elements and as per the problem statement we have to find the multiplication of diagonal elements. In this article we will see, how it can be done by using Java programming language. To show you some instances Instance-1Given matrix = 21 22 23 24 25 26 27 28 29 Main diagonal elements are: 21, 25 and 29 Anti-diagonal ...
Read MoreFind Maximum Element in Each Row of a Matrix in Java
In Java, Array is an object. It is a non-primitive data type which stores values of similar data type. The matrix in java is nothing but a multi-dimensional array which represents multiple rows and columns. Here we have given a matrix which contains set of elements and as per the problem statement we have to find out the maximum element in each row of that matrix. Let’s deep dive into this article, to know how it can be done by using Java programming language. To show you some instances Instance-1Given matrix = 21 22 23 24 25 26 27 28 29 Maximum element in ...
Read MoreFind Largest & Smallest Element in Each Column of a Matrix in Java?
In Java, Array is an object. It is a non-primitive data type which stores values of similar data type. The matrix in java is nothing but a multi-dimensional array which represents multiple rows and columns. Here we have given a matrix which contains set of elements and as per the problem statement we have to find out the largest and smallest element in each column of that matrix. Let’s deep dive into this article, to know how it can be done by using Java programming language. To show you some instances Instance-1Given matrix = 21 22 23 24 25 26 27 28 29 ...
Read MoreFind Largest & Smallest Element in Primary and Secondary Diagonal of a Matrix in Java
In Java, Array is an object. It is a non-primitive data type which stores values of similar data type. The matrix in java is nothing but a multi-dimensional array which represents multiple rows and columns. Here we have given a matrix which contains set of elements and as per the problem statement we have to find largest and smallest element in primary and secondary diagonal of a matrix. Let’s deep dive into this article, to know how it can be done by using Java programming language. To show you some instances Instance-1Given matrix = 21 22 23 24 25 26 27 28 29 ...
Read MoreCheck if a Point Exists in Circle Sector in Java
A circle is a closed shape formed by tracing a point that moves in a plane such that its distance from a given point is constant. In this article we will check how to form the equation of circle from given radius and centre. We will be given a circle with point i.e (x, y), radius r and centre i.e (x1, y1). We need to form the equation of circle from given radius and centre. The equation of the circle is given by formula − $$\mathrm{(x\:-\:x1)^2\:+\:(y\:-\:y1)^2\:=\:r^2}$$ Where, (x, y) is a point. (x1, y1) is centre. And r ...
Read MoreHow to use Weka Java API in ML
The Weka Java API is a potent machine-learning tool that makes it easy for programmers to incorporate Weka algorithms into Java applications. Complicated machine-learning models can be easily constructed using the Weka Java API's strong built-in data preparation, classification, regression, clustering, and visualization features. Weka includes a wide range of preprocessing methods, including normalization, discretization, and feature selection, and supports a number of file formats, including CSV, ARFF, and C4.5. Only a handful of the machine-learning methods offered by Weka include neural networks, SVMs, decision trees, and random forests. Developers can quickly train and assess machine learning models, as well ...
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