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Explain The Methods of java.lang.Object?
java.lang.Object gives a number of methods that are general to all objects. toString() is the most general such method. Because the default toString() method only generates the name of the class, you should override it in all classes you describe.
• public Object() • public final Class getClass() • public int hashCode() • public boolean equals(Object obj) • protected Object clone() throws CloneNotSupportedException • public String toString() • public final void notify() • public final void notifyAll() • public final void wait(long timeout) throws InterruptedException • public final void wait(long timeout, int nanoseconds) throws InterruptedException • public final void wait() throws InterruptedException • protected void finalize() throws Throwable
Describe toString() Methods ? Print methods are general in some languages, but most Java programs operate differently. You can use System.out.println() to print any object. The
Explain garbage collection. Java uses garbage collection to free the memory. By cleaning those objects which is no longer reference by any of the program. Step involve in clean
solve the string public int expression("10+20+30")
How to catch multiple exceptions explain with example? If multiple blocks match the exception type, the first block in which matches the kinds of the exception catches it. pub
What is the difference between method overriding and overloading? Overriding is a method with the same name and arguments as in a parent, whereas overloading is the same met
What are Checked and UnChecked Exception? A checked exception is some subclass of Exception (or Exception itself), excluding class RuntimeException and its subclasses. Making a
Describe Unbalanced Arrays ? Such as C Java does not have true multidimensional arrays. Java fakes multidimensional arrays by using arrays of arrays. This means that it is prob
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explain multiple inheritance in java ?.
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