Struct JavaString 

pub struct JavaString<'mc>(/* private fields */);

The String class represents character strings. All string literals in Java programs, such as “abc”, are implemented as instances of this class.

Strings are constant; their values cannot be changed after they are created. String buffers support mutable strings. Because String objects are immutable they can be shared. For example:

 String str = "abc";

is equivalent to:

 char data[] = {'a', 'b', 'c'};
String str = new String(data);

Here are some more examples of how strings can be used:

 System.out.println("abc");
String cde = "cde";
System.out.println("abc" + cde);
String c = "abc".substring(2,3);
String d = cde.substring(1, 2);

The class String includes methods for examining individual characters of the sequence, for comparing strings, for searching strings, for extracting substrings, and for creating a copy of a string with all characters translated to uppercase or to lowercase. Case mapping is based on the Unicode Standard version specified by the Character class.

The Java language provides special support for the string concatenation operator ( + ), and for conversion of other objects to strings. String concatenation is implemented through the StringBuilder(or StringBuffer) class and its append method. String conversions are implemented through the method toString, defined by Object and inherited by all classes in Java. For additional information on string concatenation and conversion, see Gosling, Joy, and Steele, The Java Language Specification.

Unless otherwise noted, passing a null argument to a constructor or method in this class will cause a NullPointerException to be thrown.

A String represents a string in the UTF-16 format in which supplementary characters are represented by surrogate pairs (see the section Unicode Character Representations in the Character class for more information). Index values refer to char code units, so a supplementary character uses two positions in a String.

The String class provides methods for dealing with Unicode code points (i.e., characters), in addition to those for dealing with Unicode code units (i.e., char values).

Implementations

impl<'mc> JavaString<'mc>

pub fn new_with_bytes( jni: &SharedJNIEnv<'mc>, arg0: Option<Vec<i8>>, arg1: Option<i32>, arg2: Option<i32>, arg3: Option<i32>, ) -> Result<JavaString<'mc>, Box<dyn Error>>

👎Deprecated

pub fn new_with_chars( jni: &SharedJNIEnv<'mc>, arg0: Option<Vec<u16>>, arg1: Option<i32>, arg2: Option<i32>, ) -> Result<JavaString<'mc>, Box<dyn Error>>

pub fn new_with_string( jni: &SharedJNIEnv<'mc>, arg0: Option<impl Into<String>>, ) -> Result<JavaString<'mc>, Box<dyn Error>>

pub fn new_with_ints( jni: &SharedJNIEnv<'mc>, arg0: Option<Vec<i32>>, arg1: Option<i32>, arg2: Option<i32>, ) -> Result<JavaString<'mc>, Box<dyn Error>>

pub fn equals(&self, arg0: JObject<'mc>) -> Result<bool, Box<dyn Error>>

pub fn length(&self) -> Result<i32, Box<dyn Error>>

pub fn hash_code(&self) -> Result<i32, Box<dyn Error>>

pub fn get_chars( &self, arg0: i32, arg1: i32, arg2: Vec<u16>, arg3: i32, ) -> Result<(), Box<dyn Error>>

pub fn compare_to_with_object( &self, arg0: JObject<'mc>, ) -> Result<i32, Box<dyn Error>>

pub fn index_of_with_string( &self, arg0: impl Into<String>, arg1: Option<i32>, ) -> Result<i32, Box<dyn Error>>

pub fn index_of_with_int( &self, arg0: i32, arg1: Option<i32>, ) -> Result<i32, Box<dyn Error>>

pub fn char_at(&self, arg0: i32) -> Result<u16, Box<dyn Error>>

pub fn code_point_at(&self, arg0: i32) -> Result<i32, Box<dyn Error>>

pub fn code_point_before(&self, arg0: i32) -> Result<i32, Box<dyn Error>>

pub fn code_point_count( &self, arg0: i32, arg1: i32, ) -> Result<i32, Box<dyn Error>>

pub fn offset_by_code_points( &self, arg0: i32, arg1: i32, ) -> Result<i32, Box<dyn Error>>

pub fn bytes(&self) -> Result<Vec<i8>, Box<dyn Error>>

pub fn region_matches_with_boolean( &self, arg0: bool, arg1: i32, arg2: impl Into<String>, arg3: i32, arg4: Option<i32>, ) -> Result<bool, Box<dyn Error>>

pub fn starts_with_with_string( &self, arg0: impl Into<String>, arg1: Option<i32>, ) -> Result<bool, Box<dyn Error>>

pub fn last_index_of_with_int( &self, arg0: i32, arg1: Option<i32>, ) -> Result<i32, Box<dyn Error>>

pub fn last_index_of_with_string( &self, arg0: impl Into<String>, arg1: Option<i32>, ) -> Result<i32, Box<dyn Error>>

pub fn substring_with_int( &self, arg0: i32, arg1: Option<i32>, ) -> Result<String, Box<dyn Error>>

pub fn is_empty(&self) -> Result<bool, Box<dyn Error>>

pub fn matches(&self, arg0: impl Into<String>) -> Result<bool, Box<dyn Error>>

pub fn replace_first( &self, arg0: impl Into<String>, arg1: impl Into<String>, ) -> Result<String, Box<dyn Error>>

pub fn replace_all( &self, arg0: impl Into<String>, arg1: impl Into<String>, ) -> Result<String, Box<dyn Error>>

pub fn split_with_string( &self, arg0: impl Into<String>, arg1: Option<i32>, ) -> Result<Vec<String>, Box<dyn Error>>

pub fn to_lower_case_with_locale( &self, arg0: Option<impl Into<JavaLocale<'mc>>>, ) -> Result<String, Box<dyn Error>>

pub fn to_upper_case_with_locale( &self, arg0: Option<impl Into<JavaLocale<'mc>>>, ) -> Result<String, Box<dyn Error>>

pub fn trim(&self) -> Result<String, Box<dyn Error>>

pub fn strip(&self) -> Result<String, Box<dyn Error>>

pub fn strip_leading(&self) -> Result<String, Box<dyn Error>>

pub fn strip_trailing(&self) -> Result<String, Box<dyn Error>>

pub fn repeat(&self, arg0: i32) -> Result<String, Box<dyn Error>>

pub fn is_blank(&self) -> Result<bool, Box<dyn Error>>

pub fn to_char_array(&self) -> Result<Vec<u16>, Box<dyn Error>>

pub fn format_with_locale( jni: &SharedJNIEnv<'mc>, arg0: impl Into<JavaLocale<'mc>>, arg1: impl Into<String>, arg2: Option<Vec<JObject<'mc>>>, ) -> Result<String, Box<dyn Error>>

pub fn equals_ignore_case( &self, arg0: impl Into<String>, ) -> Result<bool, Box<dyn Error>>

pub fn compare_to_ignore_case( &self, arg0: impl Into<String>, ) -> Result<i32, Box<dyn Error>>

pub fn ends_with(&self, arg0: impl Into<String>) -> Result<bool, Box<dyn Error>>

pub fn concat(&self, arg0: impl Into<String>) -> Result<String, Box<dyn Error>>

pub fn indent(&self, arg0: i32) -> Result<String, Box<dyn Error>>

pub fn strip_indent(&self) -> Result<String, Box<dyn Error>>

pub fn translate_escapes(&self) -> Result<String, Box<dyn Error>>

pub fn transform( &self, arg0: impl Into<JavaFunction<'mc>>, ) -> Result<JObject<'mc>, Box<dyn Error>>

pub fn formatted( &self, arg0: Vec<JObject<'mc>>, ) -> Result<String, Box<dyn Error>>

pub fn copy_value_of_with_chars( jni: &SharedJNIEnv<'mc>, arg0: Vec<u16>, arg1: Option<i32>, arg2: Option<i32>, ) -> Result<String, Box<dyn Error>>

pub fn intern(&self) -> Result<String, Box<dyn Error>>

pub fn describe_constable(&self) -> Result<JavaOptional<'mc>, Box<dyn Error>>

pub fn instance_of(&self, other: impl Into<String>) -> Result<bool, Error>

Trait Implementations

impl<'mc> JNIInstantiatable<'mc> for JavaString<'mc>

fn from_raw( env: &SharedJNIEnv<'mc>, obj: JObject<'mc>, ) -> Result<Self, Box<dyn Error>>

impl<'mc> JNIRaw<'mc> for JavaString<'mc>

fn jni_ref(&self) -> SharedJNIEnv<'mc>

fn jni_object(&self) -> JObject<'mc>

impl<'mc> ToString for JavaString<'mc>

fn to_string(&self) -> String

Converts the given value to a String.