class Test
{
public void m1(String x)
{
System.out.println(“String-args”);
}
public void m1(StringBuffer y)
{
System.out.println(“StringBuffer-args”);
}
public static void main(String args[])
{
Test t = new Test();
t.m1(new String()); ——>String
t.m1(new StringBuffer()); ——>StringBuffer
t.m1(null);——>error reference to m1()is ambiguous
}
}