Java return Statement

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return statement

return statement can be used to return a value in a method definition. Method declaration or definition should indicate the return type in the first line - the method signature.

return data type mentioned in the method signature and value returned by return statement in the method block must be of the same type.

syntax

	return;
	return <any primitive value >
	return <any object >
	return <null>
	return <method call that returns a value>

Java return statement - Examples

return need not return any value

void sayHello(){
System.out.println("Hello");
return;
}

return can return any int value

int getNumber(){
return 2;
}

return can return any float value

float payInterest{
return 2.0f;
}

return can return any String value

String getName(){
return "Jam";
}

return can return any char value

char isCorrect(){
return 'Y';
}

return can return any long value

long getLargeNumber(){
return 5003453l;
}

return can return any double value

double getPiValue()(
return 3.14159265;
)

return can return an array of values

int[] getNumbers()(
return {1,2,3,5,7,11};
)

return can return null

String get()(
return null;
)

return can return a value returned by a expression

float getPi()(
return Math.PI*3;
)

return can call a method that returns a value

int getLength(String name)(
return name.length();
)

The value returned by any value can be assigned to a variable of appropriate data type

public class ReturnExample {
  public static void main(String a[]){
	String name="Jan";
	int length = getLength(name);
	float Pi= getPi();
	int[] numbers = getNumbers();
	System.out.println(""+ getLargeNumber());
}
}

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