public class StringLengthLimit { public static void main(String[] args) { // 尝试创建一个长度超过65535的字符串,这将导致编译失败 String longString = "a".repeat(65536); // 这行代码会导致编译错误 System.out.println("String length: " + longString.length()); } } 尝试编译上述代码将会失败...
publicclassUser{@StringLengthLimit(10)privateStringusername;// Getters and setters...}publicclassMain{publicstaticvoidmain(String[]args){Useruser=newUser();user.setUsername("This is a username that exceeds the limit");try{StringLengthLimitProcessor.checkStringLength(user);}catch(IllegalAccessExceptio...
接下来,我们可以在需要限制字符串长度的地方使用@StringLengthLimit注解。下面是一个示例类User,其中使用了@StringLengthLimit注解来限制用户名和密码的长度: publicclassUser{@StringLengthLimit(minLength=1,maxLength=20)privateStringusername;@StringLengthLimit(maxLength=10)privateStringpassword;// 省略getter和setter方...
The length of field and method names, field and method descriptors, and other constant string values is limited to 65535 characters by the 16-bit unsigned length item of the CONSTANTUtf8info structure (§4.4.7). Note that the limit is on the number of bytes in the encoding and not on t...
The length of field and method names, field and method descriptors, and other constant string values is limited to 65535 characters by the 16-bit unsigned length item of the CONSTANTUtf8info structure (§4.4.7). Note that the limit is on the number of bytes in the encoding and not on ...
MAX_STRING_LENGTH)return;log.error(pos, "limit.string");nerrs++;}在看看Pool.MAX_STRING_LENGTH...
privatevoidcheckStringConstant(DiagnosticPosition var1,Objectvar2) {if(this.nerrs==0&& var2 !=null&& var2instanceofString&& ((String)var2).length() >=65535) {this.log.error(var1,"limit.string",newObject[0]); ++this.nerrs; }
1.String的长度限制 想要搞清楚这个问题,首先我们需要翻阅一下String的源码,看下其中是否有关于长度的限制或者定义。 String类中有很多重载的构造函数,其中有几个是支持用户传入length来执行长度的: publicString(bytebytes[],intoffset,intlength) 可以看到,这里面的参数length是使用int类型定义的,那么也就是说,String...
首先对于 String 我们可以有下面几种用法: 定义一个 String 类型的变量: private static final String STRING_TEST = "xxxxxxxxxxx"; 或者 String newString = "newString"; 通过在方法中定义 String 类型的变量,通过字节流创建字符串: byte[] bytes = new byte[length];String s = new String(bytes); ; ...
下面是一个简单的代码示例,演示了如何创建一个超过2GB长度的String对象: publicclassStringLengthLimitExample{publicstaticvoidmain(String[]args){StringBuildersb=newStringBuilder();for(inti=0;i<Integer.MAX_VALUE;i++){sb.append("a");}Stringstr=sb.toString();System.out.println(str.length());}} ...