Q. What is
method in java?
Ans. A Method is a group of
statements which can be executed to perform a specific task. Methods are used
for the concept of reuse ability. In Java programs at least one Method, which
is main().
Q. What are the uses
of Methods in Java?
Ans.
1) Java Methods are used to avoid rewriting
same logic/code again and again in a program.
2) We can call the Methods number of times.
3) With
the help of Methods we can easily track the large program of java
Example of simple program of Method
//Write a simple program for Method
class demo
{
void
dis()
{
System.out.println("Hello
Safal");
}
}
class function
{
public static void main(String args[])
{
demo s
= new demo();
s.dis();
}
}
Example 2: -
class boxmethod
{
int l,b,h,v;
void input()
{
l = 1;
b = 2;
h = 3;
}
void vol()
{
v = l*b*h;
System.out.println("vol is "+v);
}
public static void
main(String k[])
{
boxmethod bx = new boxmethod();
bx.input();
bx.vol();
System.out.println("vol is "+bx.v);
}
}
Example 3: -
program for function return
value or string
class program12
{
public String name;
public void nonpara1()
{
System.out.printf("\nYour name is
%s",name);
}
public void setstring(String
nm)
{
name = nm;
}
public String
nonpara2()//string return
{
return name;
}
}
class char1
{
public static void
main(String args[])
{
program12 p = new program12();
p.setstring("Safal");
p.nonpara1();
String abc = p.nonpara2();
System.out.printf("\nYour name is %s",abc);
System.out.printf("\nYour name is "+p.nonpara2());
}
}
Example 4: -
Write a simple program for method with parameter
class demo
{
void dis(int a)
{
System.out.println("value of a = "+a);
}
}
class fun_para
{
public static void
main(String args[])
{
demo s = new demo();
s.dis(5);
}
}
Example 5: -
Write a program for method
overloading.
class demo
{
void display()
{
System.out.println("Hello Safal");
}
void display(int a)
{
System.out.println(a);
}
}
class funover
{
public static void
main(String args[])
{
demo s = new demo();
s.display();
s.display(5);
}
}
No comments:
Post a Comment