Java 7 优雅的自动资源管理，java资源管理,Java7以前的做法Co

Java 7 优雅的自动资源管理，java资源管理,Java7以前的做法Co

Java7以前的做法

Connection connection = null;Statement statement = null;try{    connection =  DriverManager.getConnection(“databaseurl”,”username(opt)”,”password(opt)”);    statement = connection.createStatemnet();    boolean executionStatus= statement.execute(“query”);}catch(Exception e){    //Block of code for handle the exception    e.printStacktrace();}finally{    try{        statement.close();        connection.close();    }catch(Exception e){    //block of statements for handle exceptions.}}

Java7的做法（无需手工释放资源）

Connection connection = null;Statement statement = null;try(//请注意这里的小括号，不是大括号    connection =    DriverManager.getConnection(“databaseurl”,”username(opt)”,”password(opt)”);    statement = connection.createStatemnet()){    boolean executionStatus= statement.execute(“query”);}catch(Exception e){    //block of statements for handles the exceptions}