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?()
public class X { public static void main (String[]args) { string s = new string (“Hello”); modify(s); System.out.printIn(s); } public static void modify (String s) { s += “world!”; } } What is the result?()
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 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: import java.util.*; class ScanStuff { public static void main (String [] args) { String S= "x,yy,123"; Scanner sc = new Scanner (s); while (sc.hasNext()) System.out.print (sc.next() +" "); } } 结果是什么?()
public class foo { public static void main (Stringargs) { String s; system.out.printIn (“s=” + s); } } What is the result?()
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?()
import java.util.*; class ScanStuff { public static void main(String [] args) { String s = "x,yy,123"; Scanner sc = new Scanner(s); while (sc.hasNext()) System.out.print(sc.next() + " "); } } 结果是什么?()
public class Parent { public int addValue( int a, int b) { int s; s = a+b; return s; } } class Child extends Parent { } Which methods can be added into class Child?()
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?()
class DemoApp{ public static void main(String[] args){ int x = 5; int y = ++x + x++; S ystem.out.println(“y=”+y+”,x=”+x); } } 以上程序运行后的输出结果是哪项?()
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?()
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:()
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?()
public class X { public static void main (Stringargs) { string s = new string (“Hello”); modify(s); System.out.printIn(s); } public static void modify (String s) { s += “world!”; } } What is the result?()
请写出以下程序运行结果:public class Main { public Main() { System.out.print(main ); } public Main(String s) { this(); System.out.print(main with +s); } public static void main(String[] args) { Main main = new Main(wow); } }
读代码:public class foo {static String s;public static void main (String[]args) {System.out.println (“s=” + s);}}结果是:
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
请说出E类中标注的【代码】的输出结果。 public class E{ public static void main (){ s=s+"好吃"; } }
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
下列程序运行后的输出结果是_public class Foo{ public static void main(String[] args){ String s; System.out.println(“s=” + s); }}()
以下代码中包含错误。请指出所有有错误的代码行数 class S { int x = 7; std::string s{"Hello"}; public: S() { } void S(int x) { this->x = x; } };