Object class

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Which of the following methods are defined in the Object class?

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What will happen when the following code is compiled and executed? 00: package test; 01: public class Test { 02: public static void main(String [] args) { 03: Test test = new Test(); 04: System.out.println(test.toString()); 05: } 06: }

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If finalize() method is overridden in a class, when will this method called for an instance of that class?

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What happens when the following code is compiled? public class Performer { public static void main(String[] args) { if (args instanceof Object) { // 1 System.out.println("yes"); } else { System.out.println("no"); } } }

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Which of the following methods throws an exception InterruptedException?

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Check all methods the Object class contains.

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Which methods are defined in the Object class?

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What will be shown in console after compiling this code: public class Test { public static void main(String[] args) throws Exception { Test test = new Test(); Test testCloned = (Test) test.clone(); Test test2 = test; boolean res = test.toString().equals(test2.toString()); boolean resClone = testCloned.toString().equals(test.toString()); System.out.println(res); System.out.println(resClone); } }

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What will be the result of compilation and execution of the following code? public class Test { public static void main(String[] args) throws CloneNotSupportedException { A a1 = new A(); A a2 = (A) a1.clone(); System.out.println(a1 == a2); System.out.println(a1.min == a2.min); System.out.println(a1.max == a2.max); } } class A implements Cloneable { Integer min = new Integer(100); Integer max = new Integer(1000); @Override protected Object clone() throws CloneNotSupportedException { return super.clone(); } }

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What will be the result of compilation and execution of the following code? public class Test { public static void main(String[] args) { TestClone t1 = new TestClone(); TestClone t2 = (TestClone) t1.clone(); for(int i = 0; i < t2.arr.length; i++) { t2.arr[i] = (t2.arr.length - i); } System.out.println(t1.arr.equals(t2.arr)); } } class TestClone implements Cloneable { int arr[] = {1, 2, 3, 4, 5}; public Object clone() { try { return super.clone(); } catch(CloneNotSupportedException e) { System.out.println("Clone not supported"); return this; } } }