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相关试题
- 1.public class Precedence { public static void main(String[] args) { int x = 1, y = 2, z = 3; int a = x + y - 2/2 + z; int b = x + (y - 2)/(2 + z); System.out.println("a = " + a + " b = " + b); }}
- 2.public class Precedence { public static void main(String[] args) { int x = 1, y = 2, z = 3; int a = x + y - 2/2 + z; int b = x + (y - 2)/(2 + z); System.out.println("a = " + a + " b = " + b); } }
- 3.执行下列程序之后，变量n的值为 public class Exam{ public static void main (String[]args){ int y=2； int z=3； int n=4； n=n+-y*z/n； System.out.prinlitln(n)： } } 选项： A、3 B、-1 C、-12 D、-3
- 4.下列程序运行后n的值是________public class Test { public static void main(String[] args) { int y = 2; int z = 3; int n = 4; n = n + -y*z/n; System.out.print(n); }}选项： A:3; B:-1; C:-3; D:4
- 5.class Test { public static void main(String[]args){ int x=0; int y=4; for(int z=0;z<3;z++,x++){ y++; } System.out.println(y); } } 运行结果:____。
- 6.如下程序的输出结果是________ 。public class Main { public static void main(String[] args) { int x = 2, y = 5, z = 8, r; r = func(func(x, y), z); System.out.println(r); } public static int func(int a, int b) { return (a + b); }}
- 7.运行以下代码:class Test｛public static void main(String[] args){int x=0; int y=0; for(int z=0;z<5;z++){if((++x>2)||(++y>2)){x++;}}System.out.println(x+” ”+y);}｝运行结果是（ ）。选项： A:5 3; B:8 2; C:8 3; D:10 5
- 8.下列程序的运行结果是Public class Test{Public static void main(String ] args{Int x=3,y=4,z=5;String s="xyz";System.out.println( s + x+ y +z );} 选项： A:123 B:xyz345
- 9.运行以下代码:class Test｛public static void main(String[] args){int x=0; int y=0; for(int z=0;z[5;z++){if((++x]2)||(++y>2)){x++;}}System.out.println(x+” ”+y);}｝运行结果是（ ）。 选项： A、5 3 B、8 2 C、8 3 D、10 5
- 10.运行以下代码:class Test｛public static void main(String[] args){int x=0; int y=0; for(int z=0;z[5;z++){if((++x]2)||(++y>2)){x++;}}System.out.println(x+” ”+y);}｝运行结果是（ ）。 A: 5 3 B: 8 2 C: 8 3 D: 10 5
- 11.下面代码的运行结果是（ ）Public class Test {Public static void main(String] args) {Int] x = {1, 2, 3, 4, 5}; increase(x); int] y = {1, 2, 3, 4, 5};Increase(y0]); System.out.println(x0] + " " + y0]); }Public static void increase(int] x) {For (int i = 0; i < x.length; i++)Xi]++;}Public static void increase(int y) { y++; } } 选项： A:0 0 B:1 1 C:2 2 D:2 1
- 12.public class Test { public static void main(String[] args) { int[] x = {1, 2, 3, 4, 5}; increase(x); int[] y = {1, 2, 3, 4, 5}; increase(y[0]); System.out.println(x[0] + " " + y[0]); } public static void increase(int[] x) { for (int i = 0; i < x.length; i++) x[i]++; } public static void increase(int y) { y++; }}程序的输出是选项： A:1 1; B:1 2; C:2 2; D:2 1
- 13.class X{ int x1, x2, x3;}Class Y extends X { int y1; Y() { x1 = 1; x2 = 2; y1 = 10; }}Class Z extends Y {Int z1;Z() { x1 = 3; y1 = 20; z1 = 100; }}And,Public class Test3{ public static void main(String] args){ z obj = new Z(); System.out.println(obj.x3 + "," + obj.y1 + "," + obj.z1); }}Which constructor initializes the variable x3? 选项： A:Only the default constructor of class X B:Only the no-argument constructor of class Y C:Only the no-argument constructor of class Z D:Only the default constructor of object class
- 14.阅读下面代码:public class Foo {public static void main (String [] args) {int i = 0;addTow(i );System.out.println(i);}static void addTow(int i) {i = 2;}}上述代码的执行结果是:(1)0(2)1(3)2(4)3
- 15.public class Test { public static void main(String[] args) { int a = 3; int b = 4; System.out.println(a = b); }}程序的输出是选项： A:1; B:2; C:3; D:4
- 16.以下程序的输出结果为 public class TestInit{ int x; public static void main(String args[]){ TestInit init = new TestInit(); int x = 10; int z ; int y =0 ; if (x > 1){ y=9; System.out.println("y="+y); } z = x + y + init.x; System.out.println("x="+x); System.out.println(" y="+y); System.out.println(" z="+z); System.out.println(" init.x="+init.x); }}
- 17. What is y displayed? ( ) public class Test { public static void main(String] args) { int x = 1; int y = x + x++; System.out.println("y is " + y); } } 选项： A:y is 1. B:y is 2. C:y is 3. D:y is 4.
