What will be printed out to console?

public class Z {
    public void print( Object o ) {
        System.out.println( "Object" );

    public void print( String str ) {
        System.out.println( "String" );

    public void print( Integer i ) {
        System.out.println( "Integer" );
    public static void main(String[] args) {
        Z z = new Z();
        z.print( null );
If class contains several overloaded methods and their arguments are not in the same hierarchy, then parameter type should by explicitly specified during the method call.
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