3下面程序段的输出结果为( )。public class Test{ int a, b; Test() { a=100; b=200; } Test(int x, int y) { a=x; b=y; } public static void main(String args[]) { Test Obj 1 = new Test(12,45 ); System.out.println("a="+Obja+" b="+Objb); Test Obj2 = new Test(); System.out.println("a="+Obja+" b="+Objb); }}A．a=100 b=200 a=12 b=45B．a=12 b=45 a=100 b=200C．a=12 b=200 a=100 b=45D．a=100 b=45 a=12 b=200
3下面程序段的输出结果为( )。public class Test{ int a, b; Test() { a=100; b=200; } Test(int x, int y) { a=x; b=y; } public static void main(String args[]) { Test Obj 1 = new Test(12,45 ); System.out.println("a="+Obja+" b="+Objb); Test Obj2 = new Test(); System.out.println("a="+Obja+" b="+Objb); }}
A．a=100 b=200 a=12 b=45
B．a=12 b=45 a=100 b=200
C．a=12 b=200 a=100 b=45
D．a=100 b=45 a=12 b=200
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