英文:
Is there any way to get Boolean's string binding rather than its boolean binding in Java
问题
以下是您需要翻译的内容：
这是我需要做的：
public void verifyConditionSatisfies(Boolean condition) {
if (condition) {
System.out.println(condition.toString() + "满足条件"); // 这部分是我需要获取其字符串绑定的部分，而不是布尔值的评估版本
} else {
System.out.println(condition.toString() + "不满足条件");
}
}
以下是预期的用法：
verifyConditionSatisfies(10 > 9)
应该评估为
"10 > 9 满足条件"
英文:
Here's what I need to do:
public void verifyConditionSatisfies( Boolean condition){
if (condition) {
System.out.println(condition.toString()+ "satisfies)//This is the part i need to get its String binding, not boolean evaluated version
}else{
System.out.println(condition.toString()+ " does not satisfy)
}
}
Here's an intended usage:
verifyConditionSatisfies(10>9)
should evaluate as
"10>9 satisfies"
答案1
得分: 1
正如评论中所提到的，无法将布尔表达式10>9直接转换为字符串。将表达式作为字符串"10>9"提供可能更容易实现。
以下是一种非常规的实现方式：
public class BooleanEval {
public static void main(String[] args) throws ScriptException {
System.out.println(new BooleanEvaluation(""10>9""));
System.out.println(new BooleanEvaluation(""25<3""));
}
public static class BooleanEvaluation {
private static final ScriptEngine javaScriptEngine = new ScriptEngineManager().getEngineByName("JavaScript");
private String expression;
private boolean evaluation;
public BooleanEvaluation(String eval) throws ScriptException {
this.expression = eval;
this.evaluation = Boolean.parseBoolean(String.valueOf(javaScriptEngine.eval(expression)));
}
@Override
public String toString() {
String evalString = evaluation ? "满足" : "不满足";
return expression + " " + evalString;
}
}
}
输出：
"10>9" 满足
"25<3" 不满足
英文:
As mentioned in comments, getting a boolean expression 10>9 as a String is not possible. Giving the expression as a String "10>9" might be easier to do it.
Here is an unorthodox way to do it:
public class BooleanEval {
public static void main(String[] args) throws ScriptException {
System.out.println(new BooleanEvaluation("10>9"));
System.out.println(new BooleanEvaluation("25<3"));
}
public static class BooleanEvaluation {
private static final ScriptEngine javaScriptEngine = new ScriptEngineManager().getEngineByName("JavaScript");
private String expression;
private boolean evaluation;
public BooleanEvaluation(String eval) throws ScriptException {
this.expression = eval;
this.evaluation = Boolean.parseBoolean(String.valueOf(javaScriptEngine.eval(expression)));
}
@Override
public String toString() {
String evalString = evaluation ? "satisfies" : "does not satisfy";
return expression + " " + evalString;
}
}
}
Outputs:
10>9 satisfies
25<3 does not satisfy
答案2
得分: 0
以下是翻译好的内容：
这个
verifyConditionSatisfies(10 > 9);
被有效地评估为
Boolean temp = 10 > 9;
verifyConditionSatisfies(temp);
该方法不知道其参数是如何计算的。
字符序列1、0、>、9仅存在于源代码中。
因此，答案是“不”。
英文:
This
verifyConditionSatisfies(10>9);
is effectively evaluated as
Boolean temp = 10 > 9;
verifyConditionSatisfies(temp);
The method is unaware of how its argument was calculated.
The character sequence 1, 0, >, 9 exists only in source code.
So, the answer is "no".
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