Coder-Man :
Suppose I have a class Test declared in Test.java in package com.test:
class Test {
public void test() {
}
}
I was wondering, isn't the public access-modifier for the method test() redundant here? Because intellij doesn't give me a hint saying that it is.
I thought it's not redundant only if the class Test contains public static void main(String[] args) {} Am I right or wrong?
Ph1llip2 :
It is not redundant. If you have some derivative classes then the modifier makes a huge difference. Consider the classes:
package ex.one
class Test {
public void testPublic() {
}
void testPackage() {
}
}
and another class which derives the Test.class
package ex.one
public class TestDerivate extends Test {
private void doSomething(){
//legal
testPublic();
testPackage();
}
}
Now when we have another class which derives TestDerivate.class then you can see a different behaviour on the methods. In this case this class has a public modifier.
package ex.two
public class TestDerivateInOtherPackage extends TestDerivate {
public void test(){
// legal
testPublic();
//illegal since it is only package visible
testPackage();
}
@Override
public void testPublic() {
// still legal
}
@Override
void testPackage() {
// still illegal
}
}