static keyword

:

java

Given the following code: public class Foo { private Foo() { return this; // 1 } public static Foo get() { return new Foo(); // 2 } public static void main(String[] args) { Foo foo1 = get(); // 3 Foo foo2 = new Foo(); // 4 } } Will there be a compilation error and if so, in what lines?

java

What will be printed as the result of the following code execution? public class GoodbyeWorld { public static void main(String[] args) { System.out.print(A.i); System.out.print(B.i); } } class A { static { i = 2; } static int i = 1; }; class B { static int i = 1; static { i = 2; } };

java

What will be the result of the following code execution? class A { static String a; {print("a");} static {a = print("A");} A() {} static String print(String s) { System.out.print(s + " "); return s; } } class B extends A { static String b; {print("b");} static {b = print("B");} B() {} } class Test { public static void main(String... args) { System.out.print(B.a); } }

java

What will be the result of the following program compilation and execution? public class Test { private static class Test2 { private static final String name = "Name"; } public static void main(String[] args) { System.out.println(Test2.name); } }

java

What will be the result of the following code execution? class A { private int counter = 0; public static int getInstanceCount() { return counter; } public A() { counter++; } } public class B { public static void main(String ar[]) { A a1 = new A(); A a2 = new A(); A a3 = new A(); System.out.println(A.getInstanceCount()); //1 } }

java

What is the result of the following code compilation and execution? class A { private static void test1() { System.out.println("A.test1"); } static void test2() { test1(); } } public class B extends A { void test1() { System.out.println("B.test1"); } static void test2() { super.test2(); } public static void main(String[] args) { A a = new B(); a.test2(); } }

java

What will be printed out as a result of the following code execution? public class Main { private static class A1 { private String test() { return "A1"; } } public static class A2 extends A1 { public String test() { return "A2"; } } public static class A3 extends A2 { public String test() { return "A3"; } } public static void main(String ... arg) { A1 a1 = new A1(); System.out.println(a1.test()); a1 = new A2(); System.out.println(a1.test()); a1 = new A3(); System.out.println(a1.test()); } }

java

What will happen if you attempt to compile and run this code: class Mountain { static String name = "Himalaya"; static Mountain getMountain() { System.out.println("Getting Name "); return null; } public static void main(String[ ] args) { System.out.println( getMountain().name ); } }

java

In which lines the parameter T is not allowed to use (select 3 choices): public class Test & lt; T & gt; { private T item; // (1) private static T [] storage = new T [100]; // (2) public Test (T item) {this.item = item; } // (3) public T getItem () {return item; } // (4) public void setItem (T newItem) {item = newItem; } // (5) public static void getAllItems (T newItem) {// (6) T temp; // (7) } } </ code> </ pre>

java

What will be the output of the following code? class Super { static String ID = "QBANK"; } class Sub extends Super{ static { System.out.print("In Sub"); } } class Test{ public static void main(String[] args) { System.out.println(Sub.ID); } }