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class = 0 limit 0,1);set @feature =(select parent from finalgini where statetemp=1 limit 0,1);if (@weather is null ) thenleave rr;else if(@feature is null) thenupdate finalgini set statetemp = state; end if;end if;if (@weather is not null) thenb:beginset current_gini = (select min(gini) from finalgini where statetemp=1);set current_class = (select parent from finalgini where gini = current_gini);drop table if exists aa;create temporary table aa (namee varchar(100));insert into aa select class f

Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Script > // Executes one or more statements for each attribute of an object, or each element in an array or set. // For ([Var] variable in {object | array | collection }) /* Variable Required. A variable can be any attribute name of an object, any index of an array, or any element of a collection. */ Function Forindemo (){ // Create some variables. VaR A, key, S =

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Several examples of String constant pool problemsThe following is a comparative analysis and understanding of several common examples: String a = "a1"; String B = "a" + 1; System. out. println (a = B); // result = true String a = "atrue"; String B = "a" + "true"; System. out. println (a = B); // result = true String a = "a3.4"; String B = "a" + 3.4; System. out. println (a = B); // result = true analysis: JVM connects the "+" Number of string constants to compile the program, the JVM optimizes t

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String constant pool problems The following is a comparative analysis and understanding of several common examples:[1]String A = "A1 ";String B = "A" + 1;System. Out. println (A = B); // result = trueString A = "atrue ";String B = "A" + "true ";System. Out. println (A = B); // result = trueString A = "a3.4 ";String B = "A" + 3.4;System. Out. println (A = B); // result = true Analysis: JVM connects the "+" Number of string constants. During the program compilation period, the JVM optimizes the "

PackageCom.springmvc.controller;ImportOrg.springframework.stereotype.Controller;Importorg.springframework.web.bind.annotation.PathVariable;Importorg.springframework.web.bind.annotation.RequestMapping;ImportOrg.springframework.web.bind.annotation.RequestMethod;ImportOrg.springframework.web.bind.annotation.RequestParam;ImportOrg.springframework.web.servlet.ModelAndView;/*** */@Controller Public classViewcontroller {/*** @returnView name*/@RequestMapping ("/view") PublicString View () {System.o

already A1. The value of its string constants is determined at compile time, so the final result of the above program is true.Example 4:Java codeString a = "AB";String BB = "B";String B = "a" + BB;System.out.println ((A = = b)); result = FalseAnalysis: JVM for string reference, because in the string "+" connection, there is a string reference exists, and the reference value in the program compilation perio

: String s0= "Kvill"; String S1=new string ("Kvill"); String S2=new string ("Kvill"); System.out.println (S0==S1); S1.intern (); S2=s2.intern (); The reference to "Kvill" in the constant pool is assigned to S2 System.out.println (S0==S1); System.out.println (S0==s1.intern ()); Output Result:FalseFalseTrueTrueA few examples of string constant pooling problems:"1"String a = "AB"; String