What is preparedstatement in java?
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What are invisible components?.
What are new features introduced with java 8 ?
Is string an object?
Explain JSP life cycle
What is class and object in java?
Can you access the private method from outside the class?
Explain jdk, jre and jvm?
What is the difference between Checked and Unchecked exception? Give some examples
Explain the private field modifier?
How is java hashmap implemented?
public class BatchTest { public static void main(String[] args) { Runtime run = Runtime.getRuntime(); try { Process p = run.exec("cmd start /c D:/test.bat"); System.out.println(p.exitValue()); } catch (Exception e) { e.printStackTrace(); } System.out.println("FINISHED"); } }
Why stringbuilder is not thread safe?