A small example here: List<String> list= new ArrayList<>(); list.add("test"); list.add("test2"); if (list.toString().indexOf('t') > -1) // True { System.out.println("yes there"); } Note: As a workaround, Make an char array and add your char in to that array and th...
1.toString()方法 在java中,所有对象都有toString()这个方法 创建类时没有定义toString方法输出对象时会输出哈希码值 它通常只是为了方便输出,比System.out.println(xx),括号里面的"xx"如果不是String类型的话,就自动调用xx的toString()方法 它只是sun公司开发java的时候为了方便所有类的字符串操作而特意加入的一个...
interface java.lang.Deprecated package com.logicbig.example.clazz;public class ToStringExample3 { public static void main(String... args) { String s = int.class.toString(); System.out.println(s); s = int[].class.toString(); System.out.println(s); s = void.class.toString(); System....
2 subtleties of dealing with equals and hashCode in a Java interface 0 My confusion with Java Lambda expression 1 Enforce (re)implementing of existing method through interface contract? Related 5 Example of ==, equals and hashcode in java 129 How will Object's .equals and .hashCode will...
If you have any questions, comments, or more complicated "enum toString" examples you'd like to share, feel free to leave a note in the comments section below. Java enum toString example - What's Related As I finish up my Java enum series, including this Java enum toString example, ...
importjava.util.Scanner;publicclassEnum_toStringMethodExample3{enumGrade{ A ,B,C,D ,E; }publicstaticvoidmain(String[] args){ Scanner scanner =newScanner(System.in); System.out.println("Enter your grade"); String str = scanner.next(); ...
When the locale has neither script nor extensions, the result is the same as in Java 6 and prior. If both the language and country fields are missing, this function will return the empty string, even if the variant, script, or extensions field is present (you can't have a locale with...
Example: // Java program to demonstrate the example// of String toString() method of Enumenum Month{JAN,FEB,MAR,APR,MAY;}publicclassToString{publicstaticvoidmain(Stringargs[]){Month m1=Month.JAN;Month m2=Month.FEB;Month m3=Month.MAR;Month m4=Month.APR;Month m5=Month.MAY;System.out.printl...
The return type of the method isString, represents country, language and variant in the form of string. Example: // Java program to demonstrate the example// of String toString() method of Localeimportjava.util.*;publicclassToStringOfLocale{publicstaticvoidmain(String[]args){// Instantiates Loc...
throw new Exception("Stack trace example"); } catch (Exception e) { e.printStackTrace(pw); } return sw.toString(); } } 在上述代码中,我们在toString方法中创建了一个StringWriter对象和PrintWriter对象,然后通过抛出一个异常并使用异常的printStackTrace方法将堆栈信息输出到PrintWriter对象中。最后,将PrintWrit...