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Java Boolean compare()用法及代碼示例


布爾類的compare()方法是Java中的內置方法,用於比較兩個布爾值。這是一個靜態方法,因此可以在不創建布爾類的任何對象的情況下直接調用它,即直接使用類名。

用法:

Boolean.compare(boolean a, boolean b)

參數:它在參數中采用兩個布爾值a和b進行比較。


返回類型:函數的返回類型為int。它返回

  • 如果“ a”等於“ b”,則為0,
  • 如果“ a”為假而“ b”為真,則為負值,
  • 如果“ a”為真而“ b”為假,則為正值。

下麵是說明布爾類的compare()方法的程序:

示例1:

// Java code to implement 
// compare() method of Boolean class 
  
class GeeksforGeeks { 
  
    // Driver method 
    public static void main(String[] args) 
    { 
  
        // first value 
        boolean a = true; 
  
        // second value 
        boolean b = true; 
  
        // compare method 
        System.out.println(a + " comparing with " + b 
                           + " = " + Boolean.compare(a, b)); 
    } 
}
輸出:
true comparing with true = 0

示例2:

// Java code to implement 
// compare() method of Java class 
  
class GeeksforGeeks { 
  
    // Driver method 
    public static void main(String[] args) 
    { 
  
        // first value 
        boolean a = true; 
  
        // second value 
        boolean b = false; 
  
        // compare method 
        System.out.println(a + " comparing with " + b 
                           + " = " + Boolean.compare(a, b)); 
    } 
}
輸出:
true comparing with false = 1

示例3:

// Java code to implement 
// compare() method of Java class 
  
class GeeksforGeeks { 
  
    // Driver method 
    public static void main(String[] args) 
    { 
  
        // first value 
        boolean a = false; 
  
        // second value 
        boolean b = true; 
  
        // compare method 
        System.out.println(a + " comparing with " + b 
                           + " = " + Boolean.compare(a, b)); 
    } 
}
輸出:
false comparing with true = -1


相關用法


注:本文由純淨天空篩選整理自kundankumarjha大神的英文原創作品 Boolean compare() method in Java with Examples。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。