Java character compareTo() 方法

2024 年 11 月 6 日 | 阅读 2 分钟

Character 类的 compareTo(Character anotherCharacter) 方法用于按数值比较两个字符。

语法

参数

上述方法只需要一个参数

需要比较的字符。

Character 类的 compare(char x, char y) 方法返回

如果给定的 Character 等于参数 Character，则返回 0。

如果给定的 Character 数值小于参数 Character，则返回小于 0 的值。

如果给定的 Character 数值大于参数 Character，则返回大于 0 的值。

示例 1

public class JavaCharacterCompareToExample1 {
public static void main(String[] args) {
    Character firstVal = new Character('g');
Character secondVal = new Character('G');
// compare the first character to the second character.
intcompare1= firstVal.compareTo(secondVal);
if (compare1 == 0) {
System.out.println("The first value 'g' and the second value 'G' are equal.");
 }
else if (compare1>0) {
System.out.println("The first value 'g' is greater than the second value 'G'.");
 }
else {
System.out.println("The first value 'g' is less than the second value'G'.");
          }
     }
}

输出

The first value 'g' is greater than the second value 'G'.

示例 2

public class JavaCharacterCompareToExample2 {
public static void main(String[] args) {
 Character first = new Character('T');
Character second = new Character('G');
// compare the first character to the second character.
intcompare= first.compareTo(second);
if (compare == 0) {
System.out.println("The first value 'T' and the second value 'G' are equal.");
 }
else if (compare>0) {
System.out.println("The first value 't' is greater than the second value 'G'.");
     }
else {
System.out.println("The first value 'T-' is less than the second value'G'.");
        }
    }
}

输出

The first value 't' is greater than the second value 'G'.

示例 3

public class JavaCharacterCompareToExample3 {

public static void main(String[] args) {
Character firstVal = new Character('c');
Character secondVal = new Character('a');
  Character thirdVal = new Character('c');

// compare the first character to the second character.
intcompare1=firstVal.compareTo(secondVal);
// compare the first character to the third character.
intcompare2 = firstVal.compareTo(thirdVal);
if (compare1 == 0) {
System.out.println("The first and second values are equal");
       }
else if (compare1>0) {
System.out.println("The first value is greater than the second value");
}
else{
System.out.println("The first value is less than the second value");
        }
if (compare2== 0) {
System.out.println("The first and third values are equal");
 }
else if (compare2 >0) {
System.out.println("The first value is greater than the third value");
      } else {
System.out.println("The first value is less than the third value");
        }
    }

}

输出

The first value is greater than the second value
The first and third value are equal

下一主题Java-character-digit-method

Java character compareTo() 方法

语法

参数

返回

示例 1

示例 2

示例 3

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Java character compareTo() 方法

语法

参数

返回

示例 1

示例 2

示例 3

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