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Java Methods Signature



Java Tutorial » Java Methods Signature

The method name with the parameter list (number of parameters, type of parameters, and order of parameters ) is called method signature in java.

The method signature consists of two parts: the method’s name and the parameter list.

The parameter list includes the number, type, and order of parameters but not the name of the parameter. The name of the parameter is ignored by the compiler for checking method uniqueness. Return types and exception lists are not part of the method signature.

For example, the following four methods are considered to be the same:

public void hello(String name)
protected String hello(String firstName) throws Exception
CharSequence hello(String character)
int hello(String lastName)


This is because they have the same method signature hello(String).

However, the following two methods have distinct signatures and are considered to be different methods:

public String hello(String name)
public String hello(CharSequence name)

This is because the first method’s signature is hello(String) but the second method’s signature is hello(CharSeequence).




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Java Methods Signature - java

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