本文概述
- Java String length()方法示例
- Java String length()方法示例2
内部实施
public int length() {
return value.length;
}签名
字符串length()方法的签名如下：
public int length()指定者
CharSequence接口
退货
字符长度
Java String length()方法示例
public class LengthExample{
public static void main(String args[]){
String s1="srcmini";
String s2="python";
System.out.println("string length is: "+s1.length());
//10 is the length of srcmini string
System.out.println("string length is: "+s2.length());
//6 is the length of python string
}}【Java String length()】立即测试
string length is: 10
string length is: 6Java String length()方法示例2
public class LengthExample2 {
public static void main(String[] args) {
String str = "srcmini";
if(str.length()>
0) {
System.out.println("String is not empty and length is: "+str.length());
}
str = "";
if(str.length()==0) {
System.out.println("String is empty now: "+str.length());
}
}
}String is not empty and length is: 10
String is empty now: 0推荐阅读
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- Java字符串isEmpty()
- Java字符串getChars()
- Java字符串getBytes()
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