JAVA 5
- long i = new Long(1);
- public void mehtod(String... args)
- static import java.lang.System.*;
- public class HelloWorld {
- public static void main(String args[]){
- out.println("Hello World.");
- }
- }
JAVA 6
建議直接參考原文:IBM - Java SE 6 新特性系列JDBC一些強化
JAVA 7
- HashMap<String, String> map = new HashMap<>()
- try{
- }catch(NullPointerException | IllegalArgumentException e){
- e.printStackTrace();
- }
在try中的資源,有實作java.lang.AutoCloseable的話
- try(FileReader reader = new FileReader("file")){
- }catch(IOException){
- e.printStackTrace();
- }
於程式結束時會自動去call close方法
參考連結:
wiki - Java_5.0
IBM - Java SE 6 新特性系列
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