Add files via upload

Author: prasadbylapudi

Access__modifiers/bin/Emp.class

@@ -0,0 +1,53 @@
+class Emp
+{
+	int eid;
+	int salary;
+	String ceo;
+	
+	//this is method
+	public void show()
+	{
+		System.out.println(eid +" : "+salary +" : " + ceo);
+	}
+	
+}
+
+public class Static_demo {
+
+	public static void main(String[] args)
+	{
+		Emp prasad=new Emp();
+		prasad.eid=45;
+		prasad.salary=40_000;//this means that fourty thousand
+		prasad.ceo="BillGates";
+		
+		
+		Emp praveen=new Emp();
+		praveen.eid=40;
+		praveen.salary=40000;
+		praveen.ceo="BillGates";
+		
+	//now i want to update the ceo of praveen 
+		praveen.ceo="MarkZukenberg";
+		
+		prasad.show();
+		praveen.show();
+		
+		
+		
+	}
+	
+
+}
+
+/*
+NOTE:To access static variables we don't need object.
+
+
+
+____________________________>>>>>>>>>>>>>>>>>>>PrasadBylapudi<<<<<<<<<<<<<<<<<<<<<<_______________________________________________
+
+*/
+
+
+

Access__modifiers/bin/Static_demo.class

@@ -0,0 +1,7 @@
+
+public class Relational_operators 
+{
+	
+}
+
+ 

Access__modifiers/src/Static_demo.java

@@ -0,0 +1,22 @@
+ /*
+public class firstprogram
+{
+	public static void main(String args[])
+	{
+		System.out.println("hello world"); 
+	}
+}
+  
+*/
+public class firstprogram
+{
+	public static void main(String args[])
+	{
+	 int a=5;// we need to know about the declaration rules.wecan use $(dollar)symbol.
+	 a=9; // in java you can change values.
+	 System.out.println(a);
+	 //float f=10f;//for float u have to use the f at the end to know it is float.
+	 //double d=5.5
+	 
+	}
+}

JavaBasics/bin/Relational_operators.class

@@ -0,0 +1,26 @@
+
+public class functionExample 
+{
+	
+	String name;
+	String gender;
+	int age;
+	String color;
+	String hair_color;
+	
+	public functionExample(String name,String gender,int age,String color,String hair_color)
+	{
+		this.name=	name;
+		this.gender=gender;
+		this.age=age;
+		this.color=color;
+		this.hair_color=hair_color;
+		
+	} 
+	
+
+	public static void main(String[] args) {
+		
+	}
+
+}

JavaBasics/bin/firstprogram.class

@@ -0,0 +1,14 @@
+
+public class Arguments_using_prompt {
+
+	public static void main(String[] args) {
+		
+		int n=args.length;
+		for(int i=0;i<n;i++)
+		{
+			System.out.println(args[n]);
+		}
+		
+	}
+
+}

JavaBasics/bin/functionExample.class

@@ -0,0 +1,61 @@
+class Calc1  //note for editor.that is we don't create two classes with the same name in same project.
+{
+	int num1;
+	int num2;
+	int result;
+	
+	//this is constructor which doesn't take anything as the parameter
+	public void Calc1()
+	{
+		num1=5;
+	    num2=5;
+		System.out.println("IN constructor");
+		
+	}
+	
+	//another constructor with parameters only integers are taking
+	public Calc1(int n)
+	{
+		 num1=n;
+		 num2=n;
+		
+	}
+		
+	//here is constructor with parameters which is taking double only.
+	public Calc1(double d)
+	{
+		num1=(int) d;//we need to typecast cuz of we declare num1 as integer
+		//num2 =d;
+	}
+
+}
+public class ConstructorDemo {
+
+
+
+	public static void main(String[] args) 
+	{
+		Calc1 obj=new Calc1(9.5); //constructor
+		//Calc1 obj=new Calc1(7);
+		//Calc1 obj=new Calc1(9.5);
+		System.out.println(obj.num1);
+		
+		
+	}
+
+}
+/*
+NOTE ON CONSTRUCTOR:
+1.It is a member method
+2.Same as Class name
+3.It will never return anything.
+4.It is used to allocate memory.
+5.The defalut values of variables in java is zero wherre as in c lang we have garbage values. 
+6.we can have two different constructors in same classs.
+they are like with parameters(arguments) and without(arguments) or privide them different parameters
+7.we can pass values from constrctors 
+8.we don't need to call the constructor it will call automatically when object is created.
+
+_____________________________>>>>>>>>>>>>>>>>>>>PrasadBylapudi<<<<<<<<<<<<<<<<<<<<<<_______________________________________________
+
+*/

JavaBasics/src/Relational_operators.java

@@ -0,0 +1,11 @@
+
+public class Method_overloadingDemo {
+
+	public static void main(String[] args) 
+	{
+	
+		
+
+	}
+
+}

JavaBasics/src/firstprogram.java

@@ -0,0 +1,50 @@
+//this is class
+class Calc
+{
+	int num1;
+	int num2;
+	int result;
+	//NOTE:defaulty every class have the constructor.which has the same name as the class name.
+	
+	//this is method
+	public void perform()
+	{
+		result=num1+num2;
+	}
+}
+
+
+public class ObjectDemo {
+
+	public static void main(String args[]) 
+	{
+		//Calc obj;//this is reference to and class	
+					//object knows something and object does something.
+		//obj=new Calc();
+		Calc obj=new Calc();//instead of the above we can directly declare this.
+							//this is constructor it allocates memory to the object.
+							//the use of the constructor is to allocate memory to the object.
+		obj.num1=3;
+		obj.num2=7;
+		
+		obj.perform();
+		System.out.println(obj.result);
+	}
+
+}
+/*
+NOTE ON CONSTRUCTOR:
+1.It is a member method
+2.Same as Class name
+3.It will never return anything.
+4.It is used to allocate memory.
+5.The defalut values of variables in java is zero wherre as in c lang we have garbage values. 
+6.we can have two different constructors in same classs.
+they are like with parameters(arguments) and without(arguments) or privide them different parameters
+7.we can pass values from constrctors unlike i declared for the above Calc class  
+8.we don't need to call the constructor it will call automatically when object is created.
+
+
+_____________________________>>>>>>>>>>>>>>>>>>>PrasadBylapudi<<<<<<<<<<<<<<<<<<<<<<_______________________________________________
+
+*/

JavaBasics/src/functionExample.java

@@ -0,0 +1,13 @@
+
+public class Parse_Int {
+
+	public static void main(String[] args) 
+	{
+		int a=Integer.parseInt(args[0]);
+		int b=Integer.parseInt(args[1]);
+		int c=Integer.parseInt(args[2]);
+			
+		
+	}
+
+}

OOPS_concept/bin/Arguments_using_prompt.class

@@ -0,0 +1,37 @@
+
+ class student
+ {
+	 int age;
+	 int Roll_no;
+	 String name;
+	 
+	 //method
+	 public void display()
+	 {
+		 
+	 } 
+ }
+ 
+public class Sudent_class {
+
+	public static void main(String[] args) 
+	{
+		
+		student obj1=new student();//object reference
+		obj1.age=19;
+		obj1.Roll_no=45;
+		obj1.name="prasad";
+		obj1.display();
+		
+		System.out.println("age is "+obj1.age);
+		System.out.println("roll no is " +obj1.Roll_no);
+		System.out.println("name is "+obj1.name);
+		
+		
+		
+		
+		
+		
+	}
+
+}

OOPS_concept/bin/Calc.class

@@ -0,0 +1,8 @@
+
+public class this_keyword {
+
+	public static void main(String[] args) {
+		
+	}
+
+}

OOPS_concept/bin/Calc1.class

@@ -0,0 +1,25 @@
+
+public class Right_shift {
+
+	public static void main(String[] args) {
+		int a=10;
+		a=a>>1;
+		System.out.println("right shift value of a is"+ a);
+
+	}
+
+}
+/*
+NOTE: ON LEFT_SHIFT
+left shift means it will decreases the value;
+it means subraction or division;
+@) we have a formula for that  that is  a/2^n
+     here a is the given number
+          n is the no of bits to be shifted
+
+
+
+
+_____________________________>>>>>>>>>>>>>>>>>>>PrasadBylapudi<<<<<<<<<<<<<<<<<<<<<<_______________________________________________
+*/
+

OOPS_concept/bin/ConstructorDemo.class

@@ -0,0 +1,30 @@
+
+public class left_shift {
+
+	public static void main(String[] args) 
+	{
+		
+		int a=10;
+		a=a<<1;
+		System.out.println("left shift value of a is"+ a);
+
+	}
+
+}
+
+/*
+ NOTE: ON LEFT_SHIFT
+ left shift means it will increase the value;
+ it means addition or multiplication;
+ .it is ok with the smaller values what about for bigger  values so, we have a formula for that
+ .a* 2^n---------->this is for finding the left shift.
+   a----> a is the given number.
+   n---->n is the no of bits to be shifted.
+   
+ 
+*/
+/*
+
+_____________________________>>>>>>>>>>>>>>>>>>>PrasadBylapudi<<<<<<<<<<<<<<<<<<<<<<_______________________________________________
+
+*/

OOPS_concept/bin/Method_overloadingDemo.class

@@ -0,0 +1,16 @@
+
+public class Pattern1 {
+	public static void main(String[] args)
+	{
+		for(int i=1;i<=5;i++)
+		{
+			for(int j=1;j<=5;j++)
+			{
+				System.out.println("*");
+			}
+			System.out.println();
+		}
+		
+	}
+
+}