How to solve the problem that Java constant string input is too long

This article mainly explains "how to solve the problem of too long Java constant string input". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to solve the problem of long Java constant string input.

Problems arise

In IDEA, when the string length exceeds 65535, print, IDEA will prompt java: the constant string is too long. Compiling with javac will have a similar prompt.

Solution.

Use StringBuilder

StringBuilder sb = new StringBuilder (); sb.append ("String"); sb.append ("String"); String str = sb.toString (); String [] parts = str.split (","); System.out.println (parts.length)

An object is created, which allocates memory according to the actual stored contents and is not limited by the maximum length of String in the constant pool.

Parsing large text and large JSON by using StringBuilder

Solve the problem that IDEA prompt JAVA string constant is too long

Environment:

Intellij IDEA 2018.1.5

When doing a very long dubug of JSON to object, the Intellij IDEA compiler failed and reported that the java constant string is too long. The solution is as follows.

The operation flow of IDEA: File-> Settings-> Build,Execution,Deployment-> Compiler-> Java Compiler.

Click Use Compiler, select Eclipse, and click OK to save.

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