Ebhor.com

MySql dump using java

October 3, 2023October 3, 2023 by manish

A MySQL dump, also known simply as a “dump,” is a process of exporting or backing up the data and structure of a MySQL database into a file. This file contains a snapshot of the database’s contents at a specific point in time, making it useful for various purposes, such as: To create a MySQL … Read more

Simple Interest Calculator in Android

September 28, 2023September 28, 2023 by manish

SimpleInterest calculator in Android is developed to calculate the simple Interest in Android apps. Android Studio Chipmunk is used to develop this project. Simple interest formula is p*r*t/100 activity_main.xml The activity_main.xml file is an XML layout file used in Android app development. It defines the visual structure and components of the main user interface screen … Read more

Addition of two numbers in Android

September 28, 2023September 28, 2023 by manish

This is a basic program for Addition of two numbers in Android Steps to add two numbers Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="38dp"
        android:text="Addition of two numbers"
        android:textSize="34sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.496"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_wrapBehaviorInParent="horizontal_only" />
    <Button
        android:id="@+id/button"
        android:layout_width="295dp"
        android:layout_height="65dp"
        android:layout_marginTop="268dp"
        android:text="ADD"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.491"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:toggleCheckedStateOnClick="false" />
    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="368dp"
        android:text="Sum :"
        android:textSize="34sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.199"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
    <EditText
        android:id="@+id/editTextNumber"
        android:layout_width="296dp"
        android:layout_height="62dp"
        android:layout_marginTop="108dp"
        android:ems="10"
        android:inputType="number"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.495"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
    <EditText
        android:id="@+id/editTextNumber2"
        android:layout_width="295dp"
        android:layout_height="58dp"
        android:layout_marginTop="196dp"
        android:ems="10"
        android:inputType="number"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.491"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".MainActivity">

<TextView

android:id="@+id/textView"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="38dp"

android:text="Addition of two numbers"

android:textSize="34sp"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintHorizontal_bias="0.496"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toTopOf="parent"

app:layout_wrapBehaviorInParent="horizontal_only" />

<Button

android:id="@+id/button"

android:layout_width="295dp"

android:layout_height="65dp"

android:layout_marginTop="268dp"

android:text="ADD"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintHorizontal_bias="0.491"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toTopOf="parent"

app:toggleCheckedStateOnClick="false" />

<TextView

android:id="@+id/textView2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="368dp"

android:text="Sum :"

android:textSize="34sp"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintHorizontal_bias="0.199"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toTopOf="parent" />

<EditText

android:id="@+id/editTextNumber"

android:layout_width="296dp"

android:layout_height="62dp"

android:layout_marginTop="108dp"

android:ems="10"

android:inputType="number"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintHorizontal_bias="0.495"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toTopOf="parent" />

<EditText

android:id="@+id/editTextNumber2"

android:layout_width="295dp"

android:layout_height="58dp"

android:layout_marginTop="196dp"

android:ems="10"

android:inputType="number"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintHorizontal_bias="0.491"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.java

package com.ebhor.addition;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;


public class MainActivity extends AppCompatActivity {
    EditText number1;
    EditText number2;
    TextView result;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        number1 = (EditText) findViewById(R.id.editTextNumber);
        number2 = (EditText) findViewById(R.id.editTextNumber2);
        result = (TextView) findViewById(R.id.textView2);
        Button add = (Button) findViewById(R.id.button);
        add.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {

                int num1 = Integer.parseInt(number1.getText().toString());
                int num2 = Integer.parseInt(number2.getText().toString());
                int sum = num1 + num2;
                result.setText("Sum :" + sum);
                Toast.makeText(MainActivity.this, "Sum :"+sum, Toast.LENGTH_SHORT).show();
            }
        });
    }

}

package com.ebhor.addition;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

EditText number1;

EditText number2;

TextView result;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

number1 = (EditText) findViewById(R.id.editTextNumber);

number2 = (EditText) findViewById(R.id.editTextNumber2);

result = (TextView) findViewById(R.id.textView2);

Button add = (Button) findViewById(R.id.button);

add.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

int num1 = Integer.parseInt(number1.getText().toString());

int num2 = Integer.parseInt(number2.getText().toString());

int sum = num1 + num2;

result.setText("Sum :" + sum);

Toast.makeText(MainActivity.this, "Sum :"+sum, Toast.LENGTH_SHORT).show();

}

});

}

To validate we will use the Saripaar library. Add this library to the build.gradle in the dependencies section as below To use Saripaar in the program Overridden implementation is given below.

package com.ebhor.addition;

import androidx.appcompat.app.AppCompatActivity;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import com.mobsandgeeks.saripaar.ValidationError;
import com.mobsandgeeks.saripaar.Validator;
import com.mobsandgeeks.saripaar.annotation.NotEmpty;

import java.util.List;


public class MainActivity extends Activity implements Validator.ValidationListener {
    @NotEmpty(message = "Please Enter number1")
    EditText number1;
    @NotEmpty(message = "Please Enter number2")
    EditText number2;
    TextView result;
    Validator validator;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        number1 = (EditText) findViewById(R.id.editTextNumber);
        number2 = (EditText) findViewById(R.id.editTextNumber2);
        result = (TextView) findViewById(R.id.textView2);
        Button add = (Button) findViewById(R.id.button);
        validator = new Validator(this);
        validator.setValidationListener(this);

        add.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                validator.validate();
            }
        });
    }

    public void addNumbers() {
        int num1 = Integer.parseInt(number1.getText().toString());
        int num2 = Integer.parseInt(number2.getText().toString());
        int sum = num1 + num2;
        result.setText("Sum :" + sum);
        Toast.makeText(MainActivity.this, "Sum :" + sum, Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onValidationSucceeded() {
        addNumbers();
    }

    @Override
    public void onValidationFailed(List<ValidationError> errors) {
        for (ValidationError error : errors) {
            View view = error.getView();
            String message = error.getCollatedErrorMessage(this);

            // Display error messages ;)
            if (view instanceof EditText) {
                ((EditText) view).setError(message);
            } else {
                Toast.makeText(this, message, Toast.LENGTH_LONG).show();
            }
        }
    }

}

package com.ebhor.addition;

import androidx.appcompat.app.AppCompatActivity;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

import android.widget.Toast;

import com.mobsandgeeks.saripaar.ValidationError;

import com.mobsandgeeks.saripaar.Validator;

import com.mobsandgeeks.saripaar.annotation.NotEmpty;

import java.util.List;

public class MainActivity extends Activity implements Validator.ValidationListener {

@NotEmpty(message = "Please Enter number1")

EditText number1;

@NotEmpty(message = "Please Enter number2")

EditText number2;

TextView result;

Validator validator;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

number1 = (EditText) findViewById(R.id.editTextNumber);

number2 = (EditText) findViewById(R.id.editTextNumber2);

result = (TextView) findViewById(R.id.textView2);

Button add = (Button) findViewById(R.id.button);

validator = new Validator(this);

validator.setValidationListener(this);

add.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

validator.validate();

}

});

}

public void addNumbers() {

int num1 = Integer.parseInt(number1.getText().toString());

int num2 = Integer.parseInt(number2.getText().toString());

int sum = num1 + num2;

result.setText("Sum :" + sum);

Toast.makeText(MainActivity.this, "Sum :" + sum, Toast.LENGTH_SHORT).show();

}

@Override

public void onValidationSucceeded() {

addNumbers();

}

@Override

public void onValidationFailed(List<ValidationError> errors) {

for (ValidationError error : errors) {

View view = error.getView();

String message = error.getCollatedErrorMessage(this);

// Display error messages ;)

if (view instanceof EditText) {

((EditText) view).setError(message);

} else {

Toast.makeText(this, message, Toast.LENGTH_LONG).show();

}

Hope you … Read more

Sending data to servlet HTTP get method

September 28, 2023September 28, 2023 by manish

Here we will discuss Servlet HTTP get method What is a Servlet? A servlet is a Java-based program that runs on a web server. It handles client requests and generates dynamic web content. Servlets are an integral part of Java EE (Enterprise Edition) and are widely used for web development. HTTP GET Method The HTTP … Read more

21 to 30 Table And Easy Methods To Memorize Times Table

September 22, 2023 by manish

Multiplication times table can be extremely difficult for teaching but fear not as we have curated a fine list of easy methods for remembering multiplication times table and keeping your kids engaged. What Are Multiplication Tables? Times tables, also known as multiplication tables are tables that list the multiples of a specific number. Multiplications can … Read more

SpringBoot JPA @OneToMany Mapping : Fetch data from tables

September 22, 2023 by manish

SpringBoot JPA @OneToMany Mapping as name says we will see one to many mapping in SpringBoot and JPA. First see the ER Diagram SpringBoot JPA @OneToMany Mapping ER Diagram Following is the Entity Relationship Diagram for user, user_mails and user_mobiles table. One user can have multiple mail ids. So this is a one to many … Read more

CS Full form – Company Secretary or Computer Science

September 22, 2023 by manish

What is the full form of CS? There are two different full forms of CS, in commerce, it is Company Secretary, and in computer, it is Computer Science. CS is an abbreviation for Company Secretary. It is a senior position in both the commercial and governmental sectors. It is one of the highest-paying occupations—employees with … Read more

Command Line Argument in C Programming

September 22, 2023 by manish

In C programming often a situation may come where we want to pass the information into a program during the execution of the program. These values are called Command Line Arguments(CLA). The “main()” function handles the command line argument. Syntax: int main( int argc, char *argv[] ) { } Here, argc refers to the number of arguments … Read more

Factors of 65?

September 22, 2023 by manish

The factors of 65 are the numbers that divide 65 evenly, leaving no remainder. The factors of 65 are 1, 5, 13, and 65. To find the factors of 65, you can divide 65 by each number between 1 and 65, and any number that divides 65 evenly is a factor. Here we discuss Factors … Read more

Operator Precedence and associativity in JavaScript

September 22, 2023 by manish

Operator Precedence Operator precedence determines the order in which operators are evaluated when more than one operator is used in an expression. The higher an operator’s precedence, the earlier it is evaluated in comparison with the operators with lower precedence. Consider the following example:

a+b*c

a+b*c

The above expression is evaluated in the order of the … Read more