Methods in java

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This document discusses methods in Java. It defines a method as a collection of instructions that performs a specific task and provides code reusability. There are two types of methods in Java: predefined methods and user-defined methods. Predefined methods are methods already defined in Java class libraries that can be directly called, while user-defined methods are written by programmers according to their needs. Examples of both types of methods are provided.

Methods in java
Prof. Neeraj Bhargava
Kapil Chauhan
Department of Computer Science
School of Engineering & Systems Sciences
MDS University, Ajmer

Introduction
 the method in Java is a collection of instructions that
performs a specific task.
 It provides the reusability of code. We can also easily
modify code using methods.
 A method is a block of code or collection of
statements or a set of code grouped together to
perform a certain task or operation.


Cont..
 It is used to achieve the reusability of code.
 We write a method once and use it many times. We do
not require to write code again and again.

Types of Method
 There are two types of methods in Java:
 Predefined Method
 User-defined Method

Predefined Method
 In Java, predefined methods are the method that is already
defined in the Java class libraries is known as predefined
methods.
 It is also known as the standard library method or built-
in method.
 We can directly use these methods just by calling them in
the program at any point.
 Some pre-defined methods are length(), equals(),
compareTo(), sqrt(), etc.

Example
 public class Demo
 {
 public static void main(String[] args)
 {
 // using the max() method of Math class
 System.out.print("The maximum number is: " + Math.
max(9,7));
 }
 }

User-defined Method
 The method written by the user or programmer is
known as a user-defined method.
 These methods are modified according to the
requirement.

Example
 public static void findEvenOdd(int num)
 {
 //method body
 if(num%2==0)
 System.out.println(num+" is even");
 else
 System.out.println(num+" is odd");
 }

Assignment
 Explain Methods in java and their types with suitable
example.

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The use of huge quantity of natural fine aggregate (NFA) and cement in civil construction work which have given rise to various ecological problems. The industrial waste like Blast furnace slag (GGBFS), fly ash, metakaolin, silica fume can be used as partly replacement for cement and manufactured sand obtained from crusher, was partly used as fine aggregate. In this work, MATLAB software model is developed using neural network toolbox to predict the flexural strength of concrete made by using pozzolanic materials and partly replacing natural fine aggregate (NFA) by Manufactured sand (MS). Flexural strength was experimentally calculated by casting beams specimens and results obtained from experiment were used to develop the artificial neural network (ANN) model. Total 131 results values were used to modeling formation and from that 30% data record was used for testing purpose and 70% data record was used for training purpose. 25 input materials properties were used to find the 28 days flexural strength of concrete obtained from partly replacing cement with pozzolans and partly replacing natural fine aggregate (NFA) by manufactured sand (MS). The results obtained from ANN model provides very strong accuracy to predict flexural strength of concrete obtained from partly replacing cement with pozzolans and natural fine aggregate (NFA) by manufactured sand.

Construction Materials (Paints) in Civil EngineeringLavish Kashyap

This file will provide you information about various types of Paints in Civil Engineering field under Construction Materials. It will be very useful for all Civil Engineering students who wants to search about various Construction Materials used in Civil Engineering field. Paint is a vital construction material used for protecting surfaces and enhancing the aesthetic appeal of buildings and structures. It consists of several components, including pigments (for color), binders (to hold the pigment together), solvents or thinners (to adjust viscosity), and additives (to improve properties like durability and drying time). Paint is one of the material used in Civil Engineering field. It is especially used in final stages of construction project. Paint plays a dual role in construction: it protects building materials and contributes to the overall appearance and ambiance of a space.

Working with USDOT UTCs: From Conception to ImplementationAlabama Transportation Assistance Program

The TRB AJE35 RIIM Coordination and Collaboration Subcommittee has organized a series of webinars focused on building coordination, collaboration, and cooperation across multiple groups. All webinars have been recorded and copies of the recording, transcripts, and slides are below. These resources are open-access following creative commons licensing agreements. The files may be found, organized by webinar date, below. The committee co-chairs would welcome any suggestions for future webinars. The support of the AASHTO RAC Coordination and Collaboration Task Force, the Council of University Transportation Centers, and AUTRI’s Alabama Transportation Assistance Program is gratefully acknowledged. This webinar overviews proven methods for collaborating with USDOT University Transportation Centers (UTCs), emphasizing state departments of transportation and other stakeholders. It will cover partnerships at all UTC stages, from the Notice of Funding Opportunity (NOFO) release through proposal development, research and implementation. Successful USDOT UTC research, education, workforce development, and technology transfer best practices will be highlighted. Dr. Larry Rilett, Director of the Auburn University Transportation Research Institute will moderate. For more information, visit: https://aub.ie/trbwebinars

ATAL 6 Days Online FDP Scheme Document 2025-26.pdfssuserda39791

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Jacob Murphy Australia - Excels In Optimizing Software ApplicationsJacob Murphy Australia

In the world of technology, Jacob Murphy Australia stands out as a Junior Software Engineer with a passion for innovation. Holding a Bachelor of Science in Computer Science from Columbia University, Jacob's forte lies in software engineering and object-oriented programming. As a Freelance Software Engineer, he excels in optimizing software applications to deliver exceptional user experiences and operational efficiency. Jacob thrives in collaborative environments, actively engaging in design and code reviews to ensure top-notch solutions. With a diverse skill set encompassing Java, C++, Python, and Agile methodologies, Jacob is poised to be a valuable asset to any software development team.

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Modeling the Influence of Environmental Factors on Concrete Evaporation RateJournal of Soft Computing in Civil Engineering

Newly poured concrete opposing hot and windy conditions is considerably susceptible to plastic shrinkage cracking. Crack-free concrete structures are essential in ensuring high level of durability and functionality as cracks allow harmful instances or water to penetrate in the concrete resulting in structural damages, e.g. reinforcement corrosion or pressure application on the crack sides due to water freezing effect. Among other factors influencing plastic shrinkage, an important one is the concrete surface humidity evaporation rate. The evaporation rate is currently calculated in practice by using a quite complex Nomograph, a process rather tedious, time consuming and prone to inaccuracies. In response to such limitations, three analytical models for estimating the evaporation rate are developed and evaluated in this paper on the basis of the ACI 305R-10 Nomograph for “Hot Weather Concreting”. In this direction, several methods and techniques are employed including curve fitting via Genetic Algorithm optimization and Artificial Neural Networks techniques. The models are developed and tested upon datasets from two different countries and compared to the results of a previous similar study. The outcomes of this study indicate that such models can effectively re-develop the Nomograph output and estimate the concrete evaporation rate with high accuracy compared to typical curve-fitting statistical models or models from the literature. Among the proposed methods, the optimization via Genetic Algorithms, individually applied at each estimation process step, provides the best fitting result.

Modelling of Concrete Compressive Strength Admixed with GGBFS Using Gene Expr...Journal of Soft Computing in Civil Engineering

Several studies have established that strength development in concrete is not only determined by the water/binder ratio, but it is also affected by the presence of other ingredients. With the increase in the number of concrete ingredients from the conventional four materials by addition of various types of admixtures (agricultural wastes, chemical, mineral and biological) to achieve a desired property, modelling its behavior has become more complex and challenging. Presented in this work is the possibility of adopting the Gene Expression Programming (GEP) algorithm to predict the compressive strength of concrete admixed with Ground Granulated Blast Furnace Slag (GGBFS) as Supplementary Cementitious Materials (SCMs). A set of data with satisfactory experimental results were obtained from literatures for the study. Result from the GEP algorithm was compared with that from stepwise regression analysis in order to appreciate the accuracy of GEP algorithm as compared to other data analysis program. With R-Square value and MSE of -0.94 and 5.15 respectively, The GEP algorithm proves to be more accurate in the modelling of concrete compressive strength.

Design Optimization of Reinforced Concrete Waffle Slab Using Genetic AlgorithmJournal of Soft Computing in Civil Engineering

This research presents the optimization techniques for reinforced concrete waffle slab design because the EC2 code cannot provide an efficient and optimum design. Waffle slab is mostly used where there is necessity to avoid column interfering the spaces or for a slab with large span or as an aesthetic purpose. Design optimization has been carried out here with MATLAB, using genetic algorithm. The objective function include the overall cost of reinforcement, concrete and formwork while the variables comprise of the depth of the rib including the topping thickness, rib width, and ribs spacing. The optimization constraints are the minimum and maximum areas of steel, flexural moment capacity, shear capacity and the geometry. The optimized cost and slab dimensions are obtained through genetic algorithm in MATLAB. The optimum steel ratio is 2.2% with minimum slab dimensions. The outcomes indicate that the design of reinforced concrete waffle slabs can be effectively carried out using the optimization process of genetic algorithm.

Empowering Electric Vehicle Charging Infrastructure with Renewable Energy Int...AI Publications

The escalating energy crisis, heightened environmental awareness and the impacts of climate change have driven global efforts to reduce carbon emissions. A key strategy in this transition is the adoption of green energy technologies particularly for charging electric vehicles (EVs). According to the U.S. Department of Energy, EVs utilize approximately 60% of their input energy during operation, twice the efficiency of conventional fossil fuel vehicles. However, the environmental benefits of EVs are heavily dependent on the source of electricity used for charging. This study examines the potential of renewable energy (RE) as a sustainable alternative for electric vehicle (EV) charging by analyzing several critical dimensions. It explores the current RE sources used in EV infrastructure, highlighting global adoption trends, their advantages, limitations, and the leading nations in this transition. It also evaluates supporting technologies such as energy storage systems, charging technologies, power electronics, and smart grid integration that facilitate RE adoption. The study reviews RE-enabled smart charging strategies implemented across the industry to meet growing global EV energy demands. Finally, it discusses key challenges and prospects associated with grid integration, infrastructure upgrades, standardization, maintenance, cybersecurity, and the optimization of energy resources. This review aims to serve as a foundational reference for stakeholders and researchers seeking to advance the sustainable development of RE based EV charging systems.

Transport modelling at SBB, presentation at EPFL in 2025Antonin Danalet

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Smart City is the Future EN - 2024 Thailand Modify V1.0.pdfPawachMetharattanara

Prediction of Flexural Strength of Concrete Produced by Using Pozzolanic Mate...Journal of Soft Computing in Civil Engineering

Construction Materials (Paints) in Civil EngineeringLavish Kashyap

Working with USDOT UTCs: From Conception to ImplementationAlabama Transportation Assistance Program

ATAL 6 Days Online FDP Scheme Document 2025-26.pdfssuserda39791

acid base ppt and their specific application in foodFatehatun Noor

sss1.pptxsss1.pptxsss1.pptxsss1.pptxsss1.pptxajayrm685

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Jacob Murphy Australia - Excels In Optimizing Software ApplicationsJacob Murphy Australia

twin tower attack 2001 new york cityharishreemavs

Modeling the Influence of Environmental Factors on Concrete Evaporation RateJournal of Soft Computing in Civil Engineering

Modelling of Concrete Compressive Strength Admixed with GGBFS Using Gene Expr...Journal of Soft Computing in Civil Engineering

Design Optimization of Reinforced Concrete Waffle Slab Using Genetic AlgorithmJournal of Soft Computing in Civil Engineering

Empowering Electric Vehicle Charging Infrastructure with Renewable Energy Int...AI Publications

Transport modelling at SBB, presentation at EPFL in 2025Antonin Danalet

Methods in java

1. Methods in java Prof. Neeraj Bhargava Kapil Chauhan Department of Computer Science School of Engineering & Systems Sciences MDS University, Ajmer

2. Introduction  the method in Java is a collection of instructions that performs a specific task.  It provides the reusability of code. We can also easily modify code using methods.  A method is a block of code or collection of statements or a set of code grouped together to perform a certain task or operation. 

3. Cont..  It is used to achieve the reusability of code.  We write a method once and use it many times. We do not require to write code again and again.

4. Method Declaration

5. Types of Method  There are two types of methods in Java:  Predefined Method  User-defined Method

6. Predefined Method  In Java, predefined methods are the method that is already defined in the Java class libraries is known as predefined methods.  It is also known as the standard library method or built- in method.  We can directly use these methods just by calling them in the program at any point.  Some pre-defined methods are length(), equals(), compareTo(), sqrt(), etc.

7. Example  public class Demo  {  public static void main(String[] args)  {  // using the max() method of Math class  System.out.print("The maximum number is: " + Math. max(9,7));  }  }

8. User-defined Method  The method written by the user or programmer is known as a user-defined method.  These methods are modified according to the requirement.

9. Example  public static void findEvenOdd(int num)  {  //method body  if(num%2==0)  System.out.println(num+" is even");  else  System.out.println(num+" is odd");  }

10. Assignment  Explain Methods in java and their types with suitable example.

Methods in java

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