publicclassCompareStrings{publicstaticvoidmain(String[]args){Stringstr1="Hello";Stringstr2="World";// 使用"!="运算符判断两个字符串是否不相等if(str1!=str2){System.out.println("Method 1: The strings are not equal");}// 使用equals()方法取反判断两个字符串是否不相等if(!str1.equals(str2)...
publicclassStringComparison{publicstaticbooleancompareFirstThreeChars(Stringstr1,Stringstr2){if(str1.length()<3||str2.length()<3){returnfalse;}StringfirstThreeChars1=str1.substring(0,3);StringfirstThreeChars2=str2.substring(0,3);returnfirstThreeChars1.startsWith(firstThreeChars2);}publicstaticvoid...
在Java中,可以使用compareTo方法来比较字符串。 public class CompareStrings { public static void main(String[] args) { String str1 = "Hello"; String str2 = "World"; int result = str1.compareTo(str2); if(result < 0) { System.out.println("str1 is less than str2"); } else if(resu...
对于第一种,jvm会马上在heap中创建一个String对象,然后将该对象的引用返回给用户。对于第二种,jvm首先会在内部维护的strings pool中通过String的 equels 方法查找是对象池中是否存放有该String对象,如果有,则返回已有的String对象给用户,而不会在heap中重新创建一个新的String对象;如果对象池中没有该String对象,jvm则...
Specified by:compareToin interfaceComparable<String> Parameters:anotherString- theStringto be compared. Returns:the value0if the argument string is equal to this string; a value less than0if this string is lexicographically less than the string argument; and a value greater than0if this string ...
Compare strings to find out if they are equal: StringmyStr1="Hello";StringmyStr2="Hello";StringmyStr3="Another String";System.out.println(myStr1.equals(myStr2));// Returns true because they are equalSystem.out.println(myStr1.equals(myStr3));// false ...
对于第二种,jvm首先会在内部维护的strings pool中通过String的 equels 方法查找是对象池中是否存放有该String对象,如果有,则返回已有的String对象给用户,而不会在heap中重新创建一个新的String对象;如果对象池中没有该String对象,jvm则在heap中创建新的String对象,将其引用返回给用户,同时将该引用添加至strings pool...
下面是一个对字符串数组进行排序的例子程序。程序中在冒泡法排序中使用compareTo( )方法确定排序的顺序: // A bubble sort for Strings. class SortString{ static String arr[] = { "Now", "is", "the", "time", "for", "all", "good", "men", ...
Example 2: Check if Two Strings are Equal classMain{publicstaticvoidmain(String[] args){ String str1 ="Learn Python"; String str2 ="Learn Java";// if str1 and str2 are equal, the result is true if(str1.equals(str2)) {
Objectsis a utility class which contains a staticequals()method, useful in this scenario – to compare twoStrings. The method returnstrueif twoStringsare equal byfirstcomparing them using their addressi.e “==”. Consequently, if both arguments arenull, it returnstrueand if exactly one argument...