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2022-03-10 15:07:48 查看(134) 回复(0)
public class Test { public void Test(){ //1 } public Test(String str){ System.out.println(str); //2 } public static void main(String[] args) { Test t1=new Test(); //3 Test t2=new Test("hello"); //4 } }
A、1
B、2
C、3
D、4
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