阅读以下代码: public class Test{ public static void main(){ System.out.println(“x=”+x); } } 请问,代码运行的结果是?()
package test1; public class Test1 { static int x = 42; } package test2; public class Test2 extends test1.Test1 { public static void main(String[] args) { System.out.println(“x = “ + x); } } What is the result?()
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?()
public class Parent{ 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?()
public abstract class Shape { int x; int y; public abstract void draw(); public void setAnchor(int x, int y) { this.x = x; this.y = y; } } and a class Circle that extends and fully implements the Shape class. Which is correct?()
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?()
public class Test { private static int[] x; public static void main(String[] args) { System.out.println(x[0]); } } What is the result?()
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?()
public class Parent{ 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?()
public class X { public X aMethod() { return this;} } public class Y extends X { } Which two methods can be added to the definition of class Y?()
public class ConstOver { public ConstOver (int x, int y, int z) { } } Which two overload the ConstOver constructor? ()
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?()
public class ConstOver { public ConstOver (int x, int y, int z) { } } Which two overload the ConstOver constructor?()
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:()
现有2 个文件: 1. package x; 2. public class X { 3. public static void doX() { System.out.print("doX "); } 4. } 和: 1. class Find { 2. public static void main(String [] args) { 3. //insert code here 4. } 5. } 哪两行分别插入到类Find 的第3 行将编译并产生输出“doX”? ()
现有2个文件: package x; public class X{ public static void doX() {System.out.print("doX");} } 和: class Find{ public static void main(String [] args) { //insert code here } } 哪两行分别插入到类Find的第3行将编译并产生输出“doX”?()
1. public class A { 2. public void doit() { 3. } 4. public String doit() { 5. return “a”; 6. } 7. public double doit(int x) { 8. return 1.0; 9. } 10.} What is the result?()
public abstract class Shape { private int x; private int y; public abstract void draw(); public void setAnchor(int x, int y) { this.x = x; this.y = y; } } Which two classes use the Shape class correctly?()
public class ExceptionTest { class TestException extends Exception {} public void runTest () throws TestException {} public void test () /* Point X*/ { runTest (); } } At point X on line 4, which code can be added to make the code compile?()
检查下面的代码: class E1 extends Exception{ } class E2 extends E1 { } public class Quiz6_5{ public static void main(String[] args){ try{ throw new E1(); } // --X-- } } 下列语句,哪一个可以放到--X--位置,而且保证编译成功。
读代码:public class ExceptionTest {class TestException extends Exception {}public void runTest () throws TestException {}public void test () /* Point X*/ {runTest ();}}第4行//point X 位置, 加哪行代码能让代码可编译
以下程序运行时输入:java Test3 12 34public class Test3 {public static void main(String x[]){System.out.println(x[0] + x[1]);}}则运行结果为?
请看如下代码 class Person {private int a;public int change(int m){return m;}}public class Teacher extends Person{public int b;public static void main(String arg[]){Person p = new Person();Teacher t = new Teacher();int i;// point x}}下面哪些放在// point x?行是正确的?
下面程序段的输出结果为package test;public class Class A{ int x=20; static int y=6; public
有以下程序: public class ConstOver { public ConstOver (int x, int y, int z) { } } 下面