Java call method from another class
In this section, you will study how to access
methods of another class. For this we have created two java files:
- CallingMethod.java
- MainClass.java
In the example, five methods, namely
: add, subtract, multiply, division and modulus have been created inside the
class CallingMethod under CallingMethod.java
file. Now for getting access to CallingMethod
class methods inside the class MainClass, an
object of the CallingMethod
class of CallingClass.java file has to created inside the class of
MainClass.java file as shown in the example.
Syntax
of creating object : ClassName
objectName = new ClassName();
After creating object of CallingMethod.java
file class CallingMethod
inside the class of MainClass.java file. Its very easy to access
the methods of the class CallingMethod. With just the object name along
with a dot operator, any method at a time can accessed, as
illustrated in the example below.
Syntax for calling methods :
objectName . methodName();
Note : Base directory of both
the java files should match with each other.
Here is the code of CallingMethod.java
public class CallingMethod{
int c;
public int add(int a, int b){
return a+b;
}
public int subtract(int a, int b){
return a-b;
}
public int multiply(int a, int b){
return a*b;
}
public int division(int a, int b){
return a/b;
}
public int modulus(int a, int b){
return a%b;
}
} |
Here is the code of MainClass.java
public class MainClass {
public static void main(String[] args){
CallingMethod method = new CallingMethod();
System.out.println("Addition: " + method.add(30,15));
System.out.println("Subtraction: " + method.subtract(30,15));
System.out.println("Multiplication: " + method.multiply(30,15));
System.out.println("Division: " + method.division(30,15));
System.out.println("Modulus: " + method.modulus(30,15));
}
} |
Output will be displayed as:
Download Source Code
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