java中用eval

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2023-02-06


package com.xuz.csdn.june16;

import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;


public class ScriptEngineTest {

public static void main(String[] args) {
ScriptEngineManager sem = new ScriptEngineManager();
ScriptEngine se = sem.getEngineByName("js");
try {
System.out.println(se.eval("1+2*(3+4)").toString());
} catch (ScriptException e) {
e.printStackTrace();
}
}

}

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