param is not assigning values

Question

param2 value null in doSomething method

public String param1 { get { return 'Welcome Message'; } }
    public String param2 { get; 
        set {
            param2 = value;
        } 
    }

    public PageReference doSomething() {
        return null;
    }

<apex:commandButton action="{!doSomething}" value="Click">
    <apex:param name="param2" value="{!param1}" assignTo="{!param2}"/>
</apex:commandButton>

Answer 1

apex:param is working perfectly, problem is with command button rerender

<apex:commandButton action="{!doSomething}" value="Click" rerender="none">
        <apex:param name="param1" value="{!param1}" assignTo="{!param2}"/>
</apex:commandButton>