下面是使用equalsIgnoreCase()方法判断字符串相等的代码示例: Stringstr1="Hello";Stringstr2="hello";booleanisEqual=str1.equalsIgnoreCase(str2);// true 1. 2. 3. 4. 在上面的代码中,str1和str2的内容虽然不一样,但由于我们使用了equalsIgnoreCase()方法,所以它们被认为是相等的。 3. 使用compareTo()方法...
在Java中,使用==运算符可以比较两个String对象的引用是否相等,即它们是否指向同一个对象。 AI检测代码解析 Stringstr1="hello";Stringstr2="hello";Stringstr3=newString("hello");booleanisEqual1=str1==str2;// truebooleanisEqual2=str1==str3;// falseSystem.out.println(isEqual1);System.out.println...
All literal strings and string-valued constant expressions are interned. String literals are defined in section @jls 3.10.5 of the The Java Language Specification. Returns: a string that has the same contents as this string, but is guaranteed to be from a pool of System.out.println("intern方...
Jdk里String# valueOf(Object)源码如下: /** * Returns the string representation of the Object argument. * * @param obj an Object. * @return if the argument is null, then a string equal to * "null"; otherwise, the value of * obj.toString() is returned. * @see java.lang.Object#toSt...
使用Java 8 的 isBefore()、isAfter()、isEqual() 和 compareTo() Date.compareTo() Date 实现了 Comparable,因此两个日期可以直接用 compareTo 方法进行比较。 如果两个日期相等,则返回值为0。 如果Date1 在 Date2 参数之后,则返回值大于0。 如果Date1 在 Date2 参数之前,则返回值小于0。
publicfinalclassStringimplementsjava.io.Serializable,Comparable<String>,CharSequence{/** The value is used for character storage. */privatefinal char value[];/** Cache the hash code for the string */privateint hash;// Default to 0...} ...
* string equal to this {@code String} object as determined by * the {@link #equals(Object)} method, then the string from the pool is * returned. Otherwise, this {@code String} object is added to the * pool and a reference to this {@code String} object is returned. *...
您可以使用 AssertJ“isEqualToNormalizingNewline”,如下所示: import static org.assertj.core.api.Assertions.assertThat; ... @Test public void ingoreLineEndingCharacterTest() { assertThat("First Line\nSecond Line\n").isEqualToNormalizingNewlines("First Line\r\nSecond Line\r\n"); ...
string.equals(String str) equals() Arguments Theequals()method takes a single argument. str- the string to be compared equals() Return Value returns trueif the strings are equal returns falseif the strings are not equal returns falseif thestrargument isnull ...
从StringBuilder源码可以看出：它是维护一个char数组，每次append的时候就往char数组里面放字符，在toString...