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单选题
现有: class Top { static int x=l; public Top (inty) { x*=3; } } class Middle extends Top { public Middle() {x+=1; ) public static void main (String [] args) { Middle m = new Middle(); System. out .println (x); } } 结果为:()
A
1
B
2
C
3
D
编译失败
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更多 “单选题现有: class Top { static int x=l; public Top (inty) { x*=3; } } class Middle extends Top { public Middle() {x+=1; ) public static void main (String [] args) { Middle m = new Middle(); System. out .println (x); } } 结果为:()A 1B 2C 3D 编译失败” 相关考题
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在如下源代码文件Test.java中, 哪个是正确的类定义?()
A.public class test { public int x = 0; public test(int x) { this.x = x; } }B.public class Test{ public int x=0; public Test(int x) { this.x = x; } }C.public class Test extends T1, T2 { public int x = 0; public Test (int x) { this.x = x; } }D.public class
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在下列源代码文件Test.java中,正确定义类的代码是( )。A.pblic class test { public int x=0; public test(int x) { this. x=x;} }B.public class Test { public int x=0; public Test(int x) { this. x=x;} }C.public class Test extends T1,T2{ public int x = 0; public Test(int x){ this. x = x; } }D.protected class Test extends T2{ public int x = 0; public Test(int x) { this. x = x; } }
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有以下程序:includeusing namespace std;class sample{private:int x;static int y;
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下面程序段的输出结果为 package test; public class A { int x=20; static int y=6; public static void main(String args[]) { Class B b=new Class B(); b.go(10); System.out.println(”x=”+b.x); } } class Class B { int x; void go(int y) { ClassA a=new ClassA(); x=a.y; } }A.x=10B.x=20C.x=6D.编译不通过
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在下列源代码文件Test.java中,哪个选项是正确的类定义? ( )A.public class test { public int x=0; public test(int x) { this.x=x; } }B.public class Test { public int x=0; public Test(int x) { this.x=x; } }C.public class Test extends Ti,T2 { public int x=0; public Test(int x) { this.x=x; } }D.protected class Test extends T2 { public int x=0; public Test(int x) { this.x=x; } }
考题
以下代码的输出结果?public class Test{int x=3;public static void main(String argv[]){int x= 012;System.out.println(x);}}
A.12B.012C.10D.3
考题
现有: class TestMain { static int x = 2; static { x = 4; } static public void main(String[] args) { int y = x + 1; System.out.println(y); } } 和命令行: java TestMain 结果为:() A、 3B、 5C、 编译失败D、 运行时异常被抛出
考题
现有: class Top { static int X=l; public Top() { x*=3; } } class Middle extends Top { public Middle() {x+=l; } public static void main(String [] args) { Middle m=new Middle(); System.out.println (x); } } 结果是什么?() A、 2B、 3C、 4D、编译失败
考题
现有: class WhileTests { public static void main (String [] args) { int X=5; while (++x4) { --x; } System.out.println( "x="+x); } } 结果是什么?() A、X=6B、X=5C、X=2D、编译失败
考题
class Top { static int x = 1; public Top(int y) { x *= 3; } } class Middle extends Top { public Middle() { x += 1; } public static void main(String [] args) { Middle m = new Middle(); System.out.println(x); } } 结果为:() A、1B、2C、3D、编译失败
考题
现有: class Top { static int x=l; public Top (inty) { x*=3; } } class Middle extends Top { public Middle() {x+=1; ) public static void main (String [] args) { Middle m = new Middle(); System. out .println (x); } } 结果为:() A、1B、2C、3D、编译失败
考题
现有 public class Parentt public void change (int x){) ) public class Child extends Parent{ //覆盖父类change方法 } 下列哪个声明是正确的覆盖了父类的change方法?() A、 protected void change (int x){}B、 public void change(int x, int y){}C、 public void change (int x){}D、 public void change (String s){}
考题
单选题现有: class Top { static int X=l; public Top() { x*=3; } } class Middle extends Top { public Middle() {x+=l; } public static void main(String [] args) { Middle m=new Middle(); System.out.println (x); } } 结果是什么?()A
2B
3C
4D
编译失败
考题
单选题现有: class TestMain { static int x = 2; static { x = 4; } public static void main(String... args) { int y = x + 1; System.out.println(y); } } 和命令行: java TestMain 结果为:()A
3B
5C
编译失败D
运行时异常被抛出
考题
单选题现有: class Passer f static final int X=5; public static void main (String [] args) { new Passer().go (x); System. out .print (x); } void go (int x) { System. out .print(x++); } 结果是什么?()A
55B
56C
65D
66
考题
单选题现有: class TestMain { static int x = 2; static { x = 4; } static public void main(String[] args) { int y = x + 1; System.out.println(y); } } 和命令行: java TestMain 结果为:()A
3B
5C
编译失败D
运行时异常被抛出
考题
单选题现有 public class Parentt public void change (int x){) ) public class Child extends Parent{ //覆盖父类change方法 } 下列哪个声明是正确的覆盖了父类的change方法?()A
protected void change (int x){}B
public void change(int x, int y){}C
public void change (int x){}D
public void change (String s){}
考题
多选题现有: public class TestDemo{ private int X-2; static int y=3; public void method(){ final int i=100; int j =10; class Cinner { public void mymethod(){ //Here } } } } 在Here处可以访问的变量是哪些?()AXByCjDi
考题
单选题现有: class Banana2 f static int X=2; public static void main (String [] args) { int X=2; Banana2 b=new Banana2(); b.go(x); } static {x+=x; } void go (int x) { ++x; System. out.println (x); } 结果为:()A
7B
5C
3D
2
考题
多选题public class TestDemo{ private int x = 2; static int y = 3; public void method(){ final int i=100; int j = 10; class Cinner{ public void mymethod(){ //Here } } } } 在Here处可以访问的变量是哪些?()AxByCiDj
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