``` List<String> strList = new ArrayList<>(); //using for-each loop for(String obj : strList){ System.out.println(obj); } //using iterator Iterator<String> it = strList.iterator(); while(it.hasNext()){ String obj = it.next(); System.out.println(obj); } ``` Using iterator ...
When you are preparing to interview for a Java programming job, it’s important to consider the questions you’ll be asked. These interview questions can vary based on many factors, including company type, role level, and how long the company you interview with has been in business. How can...
In this article, we’ll look at some common interview questions on Java OOPS concepts asked in technical interviews. If you’re a software engineer, coding engineer, software developer, engineering manager, or tech lead preparing for tech interviews, check out our technical interview checklist, ...
Public class Fruit{Public static void main(String[ ] args){HashMap<Sting,String> names =new HashMap<String,String>( );names.put(“key1”,“cherry”);names.put (“key2”,“banana”);names.put (“key3”,“apple”);names.put (“key4”,“kiwi”);names.put (“key1”,“cherry”);S...
To succeed in a Java interview, you’ll need to hone your coding skills and prepare for the styles of problems you might encounter. In this post, we’ll review the Java questions you need to know to land your dream job.What a Java Interview Looks Like...
java-string-methods.md java8-questions.md jsp-questions.md multithreading-questions.md servlets-questions.md README.md Java, J2EE, JSP, Servlet, Hibernate Interview Questions Click if you like the project. Pull Request are highly appreciated. Table of Contents Java 8 Interview Questions Mul...
If the user attempts to put a key into theTreeMapthat violates this constraint (for example, the user attempts to put aStringkey into a map whose other keys areIntegertypes), theput()call will throw aClassCastException. #‘Tell the Difference’ Questions ...
publicstaticvoidmain (String[] args) { Testdaemon1 td=newTestdaemon1(); td.start(); setDaemon(true);// It will throw the exception: td. } 10. } Output Running thread is daemon... Exception in thread "main" java.lang.IllegalThreadStateException ...
Before coding the solution, interview candidates are expected to ask some follow-up questions. In particular:Should a run be encoded even if it makes the resulting string longer? Should a run be encoded even if it doesn’t make the resulting string shorter? (This can be answered from the ...
1) 调用方法的时候返回布尔值来代替返回null,这样可以NullPointerException。由于空指针是java异常里最恶心的异常,你可以参考一下下面的技术文章coding best practices to minimize NullPointerException。去看看里面具体的例子。 2) catch块里别不写代码。空catch块是异常处理里的错误事件,因为它只是捕获了异常,却没有任...