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class ConstructorTest
{
ConstructorTest()//¹¹Ô캯ÊýÊÇûÓзµ»ØÖµµÄ£¬×¢Òâ²»ÊÇvoidµÄ£¡
{
System.out.println("nothing!");
}
ConstructorTest(String s)
{
System.out.println(s);
}
public static void main(String args[])
{
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}
}
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{
public static void main(String args[])
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