reduce("", String::concat); // 求最小值,minValue = -3.0 double minValue = Stream.of(-1.5, 1.0, -3.0, -2.0).reduce(Double.MAX_VALUE, Double::min); // 求和,sumValue = 10, 有起始值 int sumValue = Stream.of(1, 2, 3, 4).reduce(0, Integer::sum); // 求和,sumValue = 10...
public class Test08{ public static void main(String[] args){ TreeSet<Double> scores = new TreeSet<Double>();//创建 TreeSet集合 Scanner input = new Scanner(System.in); System.out.println("---学生成绩管理系统---"); for(int i = 0; i < 5; i++){ System.out.println("第" + (i...
| 任何类型→浮点 |float( )|wholenumber=522``floatnumber=float(wholenumber)``print(floatnumber)| | 整数或浮点→字符串 |str( )|float_variable=float(2.15)``string_variable=str(float_variable)``print(string_variable)| | 字符串→列表 |列表()|greeting="Hello"``a_list=list(greeting)``print(...
getDouble("math"); } sum=sum/i;//平均成绩 System.out.println("应用数学成绩: \t"+String.format("%.2f", sum)+"\t\t"+max+"\t\t"+min); i=0; sum=0.0; String sql1 = "select English from students order by English desc;"; //要执行的SQL ResultSet rs1 = stmt.executeQuery(sql...
util.Locale;publicclassNumberToEnglish{publicstaticStringconvertToEnglish(doubleamount){NumberFormatformat=NumberFormat.getCurrencyInstance(Locale.US);returnformat.format(amount);}publicstaticvoidmain(String[]args){doubleamount=123456789.99;StringenglishAmount=convertToEnglish(amount);System.out.println(englishAmount...
("。",".");result=result.replaceAll("?","?");result=result.replaceAll("!","!");returnresult;}publicstaticvoidmain(String[]args){Stringinput="你好,这是一个测试句子。你知道吗?我不知道!";Stringoutput=ChinesePunctuationConverter.convertChinesePunctuationToEnglish(input);System.out.println(output)...
public int compare(String o1, String o2) { return Integer.compare(o1.length(),o2.length()); } }); //Lambda 表达式作为参数传递 TreeSet<String> ts2 = new TreeSet<>((o1,o2)-> Integer.compare(o1.length(),o2.length())); 【3】Lambda 表达式语法:Lambda 表达式在 Java 语言中引入了一个...
:name是@Param("name")String name的实参值.这个脚本要表达的意思不言而喻. 不过脚本的解析能力还不能自动拆箱(unboxing),需要调用拆箱方法,请留意住:credit.intValue() > 2. 若写成:credit > 2是编译不了的. 其他包装类型Short, Long, Byte, Boolean, Character, Float, Double 以此类推. 脚本的编译工作...
Information output: Chinese Cannot used! English Yes!please input an integer: Ia1 12 please input an integer: Ia2 23 please input an float: Fa1 34.5 please input an float: Fa2 45.67 please input an double: Da1 876.543 please input an double: Da2 9876.234 The computer outputs user ...
javaapiexamples.DB;import java.io.IOException;import java.sql.ResultSet;import java.sql.SQLException;import java.util.regex.Matcher;import java.util.regex.Pattern;importorg.apache.commons.lang.StringUtils;importNLP.POSTagger;publicclassEnglishOrCode { privatestaticTokenizer tokenizer = null;...