2. write java code;
Public class TestBigInteger {
Public static void main(String[] args) {
big integer bint = new big integer(string . value of( 123));
}
}
3. Write the output result code;
system . out . println(bint);
system . out . println(bint . getclass());
4, the execution result, the type is' classjava.math.biginteger';